2026.12 Released

2026.12 Released

2026.12 July 2, 2026


-change (dkulp) Windows installer and executables are now Authenticode signed (Azure Trusted Signing), reducing SmartScreen/antivirus false positives
-change (derwin12) Remove Keep Channel Numbers for FPP devices (#5459)
-change (scott) Preferences dialog (Windows/Linux) uses a list of pages on the left with icons instead of tabs across the top
-enh (scott) Added new Tip of the Day info for recent release updated items
-enh (derwin12) Sequencer: add “Select Effects incl SubModels” to model right-click menu (#6618)
-enh (derwin12) Lua automation: expose all video export formats (High Quality MP4, Lossless RGB, ProRes 4444, HD ProRes) via exportModel / exportModelWithRender
-enh (scott) Moving Head effect: new Pattern tab generates pan/tilt from parametric shapes (Circle, Eight, Diamond, Lissajous, etc.) modeled on QLC+ EFX, with a value-curve-animatable rotation
-enh (scott) Moving Head effect: Enable Shutter checkbox (in the Control tab, for both RGB and color wheel) holds the shutter open at the model’s Shutter On Value; Auto Shutter still takes over when active. Check Sequence warns if a shutter channel has a Shutter On Value of 0
-enh (derwin12) Effect sequence wizard now adds a default New Timing track (#6612)
-enh (derwin12) Add Timing Track option to Single Strand chase (cycles per timing mark) (#4771)
-enh (derwin12) Allow timeline to zoom out to see any effects outside the duration (#6528)
-enh (derwin12) Sync smart remote type across port block for controllers requiring it (#3468)
-enh (scott) First run with no show folder set: offer to create and use a default show folder at Documents/xLights (or pick one)
-enh (scott) Update dialog can download the new release installer from GitHub and run it (instead of opening a browser)
-enh (scott) Show the active OpenGL backend (ANGLE vs native) in the About dialog and startup log
-enh (cybercop23) Add set default option for sequence duration and fps (#5233)
-enh (cybercop23) Sequencer timeline fits the full sequence to the viewport width on load, keep same width for 20/40 fps.
-enh (jessica12ryan) Show last input/output dates in the controller properties (#5728)
-enh (cybercop23) Add cylinder shape and offset to cube model (#4369)
-enh (neil) Add ability to link props into “sets” so they move as one (#3703)
-enh (derwin12) House Preview: right-click “Keep on Top” keeps the popped-out window above other apps (#5533)
-enh (AlexB) During a multi-effect drag, only the colliding ghost effects turn red instead of all of them (#6553)
-enh (neil) Bulk Edit Rotate skips models whose type doesn’t support that axis and reports the skipped models (#6521)
-enh (derwin12) Grey out Symmetrize/Combine Strands in the SubModels menu when they don’t apply (#6554)
-bug (derwin12) Fix uploadFPPConfig/uploadSequence LUA commands failing with a hostname instead of a numeric IP
-bug (derwin12) Fix video/image/shader filenames containing commas being truncated when saved (#6638)
-bug (derwin12) Wheel of Effects was not honoring the Reset Effects on Effect change nor setting defaults
-bug (derwin12) Fix floating sequencer panes shifting position on macOS after switching to the Layout tab and back (#6631)
-bug (dkulp) Wait for renders to abort before deleting models/groups so a render worker can’t crash on freed model data
-bug (dkulp) Fix waveform render crash when the audio/zoom view list is rebuilt mid-paint (stale view index)
-bug (dkulp) Fix crash hovering the layout preview in 3D mode when the model list contains a null entry
-bug (dkulp) Fix crash mousing over the sequencer grid when a row’s effect layer is momentarily unavailable
-bug (dkulp) Fix crash selecting a controller in the Setup list when the named controller could not be found
-bug (dkulp) Fix intermittent crash with a 3Dconnexion mouse when motion/button events referenced a window being destroyed on the main thread
-bug (dkulp) Fix ColorWash/Bars/Shockwave/Spirals crash writing past the pixel buffer when rendered into a variable/oversized sub-buffer
-bug (dkulp) Fix crash loading a malformed OBJ mesh that references vertex/normal/texcoord data it does not contain
-bug (dkulp) Fix crash hovering the 3D layout preview while placing a new model before its nodes are populated
-bug (dkulp) Fix crash/heap corruption opening a sequence while a render from the previous sequence was still finishing
-enh (dkulp) Crash reports now record the C++ exception type (demangled) and message, including the error code and file paths for filesystem/system errors
-bug (dkulp) Fix crash saving-with-render or changing sequence timing while a render is still running (sequence data was freed out from under the render threads)
-bug (derwin12) Allow multiple timing tracks to be active simultaneously in master view (was limited to one)
-bug (derwin12) Fix missing video display and re-render in Select Videos panel
-bug (derwin12) Fix State/Face effect dropdowns resetting on icon click (#6595)
-bug (cybercop23) Ensure channels are recalculated when merging base models to show models
-bug (derwin12) Fix corrupted Export House Preview on Windows with odd dimensions
-bug (derwin12) Crash in Check Sequence with Models that had extra Layers
-bug (derwin12) Missing video files now show in red in the Select Videos panel with Re-select/Bulk Find options
-bug (agfazio) Auto scroll during the drag + copy on drag operations
-bug (derwin12) Spinner model with large hollow was not dimensionally correct (#6558)
-bug (agfazio) Fix shader dynamic parameters not persisting (#6567)
-bug (cybercop23) Restore the ability to slide multiple effects with shift key (#6576)
-bug (dkulp) Fix crash closing/switching sequences with a Moving Head effect selected (programmatic default
reset fired live update handlers that dereferenced a stale model)
-bug (dkulp) Fix crash clicking a sequencer row heading when the visible row information was momentarily unavailable
-bug (charlie) Fix crash when pressing Escape to cancel a polyline drag during creation that leaves the model with a single point
-bug (dkulp) Fix crash importing/downloading a DmxServo3Axis model (factory didn’t recognize the legacy type alias);
unrecognized/malformed model files now cancel the import with an error instead of crashing
-bug (dkulp) Don’t crash drawing when a Metal pipeline fails to compile (e.g. older macOS); skip the draw instead
-bug (dkulp) Fix crash drawing a texture on the OpenGL backend (Windows/Linux) when the vertex accumulator
or texture was null; skip the draw instead, matching the existing drawPrimitive guards
-bug (dkulp) Fix crash logging an OpenGL shader compile/link failure when the “opengl” logger was never
registered (e.g. on the iPad/Metal-only path); fall back to the default logger
-bug (derwin12) Linux: fix Controllers/Layout property panes permanently freezing (no repaint) after editing a
dropdown-style property (#6215, #4175)
-bug (cybercop23) Fix model rename in Layout not preserving position in non-master Display Element views (#6574)
-bug (cybercop23) Fix Export Faces/States/SubModels from Layout right-click menu creating ghost duplicate submodels
instead of replacing same-name entries; extra faces/states/submodels unique to the target model now survive (#6587)
-bug (cybercop23) Fix Sort By Name/Location in the model group panel incorrectly adding a blank entry at the top (#6588)
-bug (agfazio) Fix Double click to expand on group
-bug (neil) Fix Replace Model “keep position and size” being ignored for locked, base-linked, and two-point models; base-linked models are now blocked as replace targets (#6548)
-bug (derwin12) Fix possible crash in the Moving Head effect panel when recalling/loading settings
-bug (derwin12) Fix crash writing the preview GIF for a preset
-bug (agfazio) Fix crash with CUDA/NVDEC hardware decoded video (#6560)
-bug (derwin12) Linux: fix crash on startup from a Moving Head panel resize before it is shown on screen (#6586)
-bug (derwin12) Refresh the Display Elements panel after renaming a model so the new name shows immediately
-bug (agfazio) Sequencer drag now clamps effects flush against blocking neighbors instead of bouncing back; group stays selected after drop; Ctrl+drag adds to selection (#6556)
-bug (agfazio) Fix being unable to move effects on timing/lyric tracks after the ghost drag-to-move change (#6620)
-bug (derwin12) Windows: graceful exit instead of crash on Snapdragon/ARM when OpenGL 3.x is unavailable, without blocking resize repaints (#6630)