Error checking blocked by completion

[PlankCipher]

Thank you for the bug report

• [X] I am using the latest version of lsp-mode related packages.
• [X] I checked FAQ and Troubleshooting sections
• [ ] You may also try reproduce the issue using clean environment using the following command: M-x lsp-start-plain

Bug description

Error checking gets blocked by completion, which results in an off-by-one delay between what is in the buffer and what lsp-mode and sideline show, until the completion popup is closed. Once the completion popup opens, lsp errors stay always behind by one character.

https://user-images.githubusercontent.com/54680730/164157507-496fe5a5-927c-4afd-a741-914a3e516661.mp4

Steps to reproduce

Shown in attached video.

Expected behavior

lsp errors not to be blocked by completion.

Which Language Server did you use?

lsp-clangd

OS

Linux

Error callstack

No response

Anything else?

No response

[PlankCipher]

Hello?!