It's the company. Letting incompetent people who are vocal rise to the top is a part of Google's culture, and the internal performance review process discourages excellence - doing the thousand small improvements that makes a product truly great is invisible to it, so nobody does it.
Software that people truly love is impossible to build in there.
4- UI spammed with garbled text if you attach large file
5- Prompt rejected with no error, prompt text returns to chat input but attachments are deleted
6- Pasting small amounts of text takes a few seconds in long chats
Annoying:
1- Scroll is hijacked when the prompt is accepted by server and thinking starts, instead of when you send the prompt or not at all.
---
If you haven't experienced these then I can only hazard a guess that you're keeping your chats at less than 100k token context or you're using AIStudio. The major issues happen when you push it with 90k token prompts or 200k token cumulative chats. They don't all have the same precise trigger, though, some are connected to long chats, others to big attachments, etc.