s&box

Editor crash — heap corruption in QStyleSheetStyle::repolish after Component hot-reload

The s&box editor crashed with a heap-corruption fault deep in Qt's stylesheet path. Top frames:

ntdll       RtlpLogHeapFailure → RtlFreeHeap
Qt5Core     _free_base                            free_base.cpp:105
Qt5Widgets  QVector<T>::~QVector / destruct / freeData
Qt5Widgets  QHash<T>::remove                      qhash.h:823
Qt5Widgets  QStyleSheetStyle::repolish            qstylesheetstyle.cpp:2948
Qt5Widgets  QWidget::setStyleSheet                qwidget.cpp:2554
toolframework2  Exports::TlWndwMngr_setStyleSheet interop.tools.cpp:20830

Looks like a use-after-free / double-free on a QVector owned by the stylesheet style cache while a widget is being repolished. Nothing in my game code touches Qt or styles directly — all geometry work goes through Sandbox.Terrain.SyncGPUTexture() and Mesh/Model.Builder.

Repro context (iterative Component editing with hot-reload):

Custom Component with ~25 [Property] fields across multiple [Group(...)] sections
Over ~30 minutes I added 5 new property groups (~12 new [Property] fields), then a couple of small fixes including default-value flips
Saved + hot-reloaded several times in close succession
Inspector for the relevant GameObject was open and being interacted with the whole time
Crash fired during inspector interaction shortly after a hot-reload completed

Suspected reproducer: open a scene with a Component instance that has many [Property] fields across multiple [Group(...)] → edit the source to add/remove/rename properties → save → hot-reload → click into the inspector → repeat in rapid succession with the inspector for that GameObject visible.

Workaround: restart editor after major Component refactors instead of relying on hot-reload; collapse the inspector before saving file changes.