Oh great. Try this in :
1. in the message input field, create a list with a few points
2. select a complete row and the "quote" formatting
3. click on the "discard measage" button (as the formatting is broken/mangled now)
4. see how the text input field shows a grey box and stops working completely
5. admire the software quality

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If you have a fediverse account, you can quote this note from your own instance. Search https://techhub.social/users/stereo4x4/statuses/115181769906571884 on your instance and quote it. (Note that quoting is not supported in Mastodon.)