Task 1:
- Input history works good.
- Markdown does not work with nesting formats (attachment) and seems to work as before.Also still does not support Quotes.
- TextFormatter working good, and original bugs were fixed. Still found several issues:
+ Emoji Formatting (seems like TextFormatter can not properly calculate applied formats, when Emoji is inside selection + attachment)
+ Spoiler and Blockquote can not be turned off when any of B,I,U,S formats applied (attachment)
+ On spoiler and blockquote selection resets and need to select text again
+ Can not escape markup on the edges of input
- Input does not scroll properly, so when text overflows input container it's not possible to access it (attachment)
- Attachment Modal input has same issues, including not being able to scroll.

Task 2:
- Chat Folders was implemented in a good way and working smoothly
- At Mobile devices ChatFolder Icon Selection is overflowing the screen (attachment)
- (Opinion) ChatFolder column is hidden when not on ChatList page. As Folder Column has "Menu" button which transforms into "Return" button, would be better if it would be used in that way on Settings/Contacts/etc. pages as well

Task 3:
- Implemented backgrounds with pattern and colors, which are working fine
- Color changes on message send from Composer.Input, but not from Attachment Modal Input, or also on Reply or Forward (maybe Edit as well)
- Also after theme change backgrounds with pattern are not displayed properly in Settings (sometimes color appears at each on mouse hover, sometimes not at all) (attachment)