Occasional index out of range panic in fyne triggered by progress modal

[ErikKalkoken]

Occasionally the following panic is triggered by a progress modal:

panic: runtime error: index out of range [1] with length 1

goroutine 236 [running]:
fyne.io/fyne/v2/internal/driver/common.(*overlayStack).remove(0xc0004b4c00, {0x16ccde0?, 0xc001dd4c00?})
        /home/erik/go/pkg/mod/fyne.io/fyne/[email protected]/internal/driver/common/canvas.go:563 +0x8d
fyne.io/fyne/v2/internal/driver/common.(*overlayStack).Remove(0xc0004b4c00, {0x16ccde0, 0xc001dd4c00})
        /home/erik/go/pkg/mod/fyne.io/fyne/[email protected]/internal/driver/common/canvas.go:552 +0x52
fyne.io/fyne/v2/widget.(*PopUp).Hide(0xc001dd4c00)
        /home/erik/go/pkg/mod/fyne.io/fyne/[email protected]/widget/popup.go:28 +0x42
fyne.io/fyne/v2/dialog.(*dialog).hideWithResponse(0xc0002be310, 0x0)
        /home/erik/go/pkg/mod/fyne.io/fyne/[email protected]/dialog/base.go:111 +0x25
fyne.io/fyne/v2/dialog.(*dialog).Hide(...)
        /home/erik/go/pkg/mod/fyne.io/fyne/[email protected]/dialog/base.go:53
github.com/ErikKalkoken/fyne-kx/modal.(*ProgressModal).Start.func1()
        /home/erik/go/evebuddy-project/fyne-kx/modal/progress.go:71 +0x48
created by github.com/ErikKalkoken/fyne-kx/modal.(*ProgressModal).Start in goroutine 191
        /home/erik/go/evebuddy-project/fyne-kx/modal/progress.go:69 +0x65
exit status 2

This looks like a concurrency bug.

It might make sense to postpone this issue until Fyne 2.6 is released, since it comes with an overhaul of the threading model, which might make any current fixes obsolete.

[ErikKalkoken]

This is likely caused by this issue: fyne-io/fyne#5564. A fix is expected for Fyne 2.6.0.