Copy paste in Quote block

Bug Report

Problematic behavior
I wanted to create a quote block from a text I'm copy/pasting.
I tried 2 ways to do it before I found the third way that works...
This caveat applies to all types of blocks.

Expected behavior/code
I feel the 2 stories detailed below should work, especially the first one.

Steps to Reproduce

First story:

1. write a paragraph in any text editor on your computer. Copy the text to your pastbin.
2. go to Docs and create a new document
3. Do "/" and choose the "Quote" block You now have your cursor at the beginning of a quote block
4. Paste the content of your pastebin
5. The quote block is gone

Second story:

1. go to Docs and create a new document
2. write a paragraph
3. Bring your cursor to the beginning of the block which now contains your paragraph.
4. Do "/" and choose the "Quote" block
5. A quote block is created below your paragrah but your paragraph is still a standard block

The third story that already works:

1. go to Docs and create a new document
2. write a paragraph
3. select the paragraph
4. the format toolbar appears, choose "quote" in the select box with all formats

Misc

• Node version:
• Package manager:
• Browser:
• I'm a sponsor and would appreciate if you could look into this sooner than later 💖

Reproduce the three Quote-block workflows in the Docs editor: paste into a newly inserted Quote block, use the slash command at the start of an existing paragraph, and use the format toolbar. Compare the resulting block structure and behavior; done means the first two workflows preserve or convert the paragraph as expected without removing the Quote block.