Placing a point with Draw > Point removed it immediately and opened the Add
Location form, so the officer filled in a form with nothing at the spot they had
just tapped, and a marker then appeared from nowhere. Nothing visibly turned
into anything, which is what made it read as broken.
The sketch now stays until the form closes. On save the marker has already been
added by then, so the point is replaced by it; on cancel, or on leaving the
drawing tools with the form still open, it is simply discarded. Placing a second
point while a form is open replaces the pending sketch rather than leaving the
first one behind.
Marker loading is also taken out of the undo history. Entering edit mode calls
UndoRedo._watchSources(), which picks up every vector source including the
markers — so reloading the Locations list registered as two undoable edits, and
Undo after saving a location stripped the markers off the map while leaving the
row in the database. That is the same "my point disappeared" symptom by another
route. clearMarkers() uses _silentClearSource for the reason already documented
on the vertex overlay: ol-ext patches VectorSource.clear to fire block events
that the record flag does not gate.
Verified all three endings — save, cancel, and abandoning by leaving Digitise —
plus placing a second point mid-form, and that the undo stack stays empty
through the whole sequence with recording switched back on afterwards.
Service Worker v21 -> v22.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
