Bangle2 died on low power - did not shut itself down?

Firstly thanks for the effort in the previous months to reduce the power consumption of the watch. When I bought it in February it ran a full week on a single charge and I expected that to go down over time when I added more apps/watchfaces.
Instead in the previous run it managed to not bother me for two weeks straight 🙀

Maybe that's a reason that yesterday I forgot to charge the watch and unfortunately it ran flat. What surprised me is that it apparently did not shut itself down in time and I also could not turn it off anymore when I realized I was on 0% (but still living).

When I tried to get into the Launcher menu the screen just garbaged up and I couldn't do anything besides reloading which then corrupted the screen a bit differently again.
My assumption is that the power was so low that either the CPU or the screen drawing did not have enough power anymore to redraw the full screen and in that state I could not reach the "Turn off" menu anymore.

I would have assumed that the watch turns itself off before it reached such a low state but either it wasn't there yet (but already pretty much unusable).
Or does this self-shutoff maybe not exist at all (or is broken?)?
If the power runs out (or goes super low) while the watch is still alive, is there a risk that it corrupts its settings or other storage?

Is there another way to shut down the clock without the settings-menu? I understand that different timings of pressing the button are just different stages of "resets" but I didn't want to reset just shut down the watch safely.

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