Can't type in "Other" text area when flagging an item from mobile browser

When I flag an ID, comment, or observation, I’m not able to enter a comment in the box under “Other” from Firefox on mobile. Tapping the text area makes the whole flag pop-up disappear.

I am able to type in the box in Chrome. Pixel 3.

Is this still happening? My Android is so ancient I wouldn’t trust my ability try and replicate it there.

Tapping the flag text area in an updated Firefox app on a relatively recent Android (still Pixel 3, Android 10) now does not make the whole text box disappear. Hooray!