Slight issues with setting custom font scale

[Mrnofish]

When inserting the custom value manually, the placeholder text shows the decimal separator as ',' however the field won't accept the comma (which is also available on the virtual keypad), only the dot. The value appears to register when using the dot as separator (with the same caveat about having to go back as described in the following paragraph).

When using the arrows, it looks like sometimes(?) only the first tap registers and the value displayed in the field doesn't update. Going back and tapping on custom font scale appears to show the true value in the field again. This is a bit inconvenient as it sets off a cycle of bumping, then going back, bump again, which I cannot imagine was the way this was meant to work?

LOS 20 with locale set to English German.