- see
https://chromium-review.googlesource.com/c/chromium/src/+/1415690

where an extension tries to read from the clipboard
(via document.execCommand('paste')).
- run this code quickly after copying a large amount of text (e.g. from a large webpage via ctrl+a, ctrl+c)

result:
the paste is empty. Subsequent pastes (or an initial paste after some delay) are non-empty and correct.

expected:
the initial paste should contain the right text even if done quickly after copy