Thanks for the preview!
Regarding the message editor - I'm attaching screenshots (1 how I typed it, 2 how it looked in the preview, 3 how it was sent in the end).
It's somewhat similar to our previous one; ideally we'd roll back that old one which was changed about 5 (?) years ago, but that's probably wishful thinking.
— After creating a spoiler, image, or table - the first two cannot be edited (at least I couldn't find how), and in a table you can only change the number of rows and columns.
Ideally, at least like in the previous editor - drag the edges of the table to change its width, not just through code. Also, border should be addable, because they always disappear. An already added image should be editable - to change the image itself or its size. With a spoiler, the title and the text associated with it.
— A separate bug with the spoiler - if you enter and exit code mode, the word "spoiler" gets added to the spoiler each time.
— Table borders "jitter" when you hover over them with the cursor.
— It would be great to add vertical alignment options for text besides "right, center, left" - also "top, bottom". This is very convenient for tables so text can start at the top of the table rather than in the middle.
— Visual issues and bugs - visible in the screenshots.
And something new: at some point an old avatar suddenly came back on me (heh).
Also, when you type a short "dash" at the beginning of a line, it converts into a bulleted list, which may not be very convenient.