Attached id a backup file of config.
issue_2382_banglejs_backup.zip

Attached id a backup file of config.
issue_2382_banglejs_backup.zip

I restored the backup but I haven't managed to reproduce the bug.

I have reproduced quite easily on a 2nd Bangle 2 now (same config)
Done a short video at:

https://www.dropbox.com/s/i4sjm9ckcyzym2v/VID_20221211_161039.mp4?dl=0

I also noted that installing swipe menus made the issue go away, then I could uninstall swipe menu and it would come back.

I also noted that installing swipe menus made the issue go away, then I could uninstall swipe menu and it would come back.

This really makes me think it's something with E.showscroller that isn't updated with the latest changes, as suggested on the forum thread.

I was able to reproduce the bug.

I have narrowed it down to the following:

var menu = {
  '< Back': () => print
};

for (n = 0; n <= 10; n++) {
  menu[n] = {};
}

E.showMenu(menu);

If you enter the following lines in the left side of the IDE, the watch will hang/reboot

Bangle.emit("drag", { "x": 0, "y": 0, "b": 1, "dx": 0, "dy": -250 })
Bangle.emit("drag", { "x": 0, "y": 0, "b": 1, "dx": 0, "dy": 167 })

The bug occurs only when Back is set.

Thanks for the report - and thanks @BartS23 for such a concise way to reproduce this - I'll have a look and see if I can find/fix this this morning.

Just to add I managed to reproduce with the standard launcher too (as you'd expect given showScroller). Given the hang it may be related to the scrolling code - it's possible it's related to the LCD speed improvements that went into 2v16

It looks like just g.setClipRect(0,24,175,175).scroll(0,167) will do it, so it's an internal Espruino issue.

Should now be fixed with espruino/Espruino@f612b25

The code shown above won't break it now, and I could previously crash the Bangle as in the original report, and I don't seem to be able to now - so if you update to the latest cutting edge release (or 2v17 when released) then that should fix it

Wow, great collaboration. Thanks for fixing so quicklty. I will upgrade to latest fw straight away.
Well done to @BartS23 for finding the lines of code that would trigger this.

I have tested and the hang bug is fixed in 2.16.33 but I still get screen corruption in the settings app on scrolling through long menus. I will log a new bug for that.

Thanks. New issue -> #2393