Unable to save draft when tab is open for a long time

[janvandenberg]

I've encountered an issue while writing longer articles with many links in WordPress. After a while, the "Save" button becomes unresponsive, as if there's no connection, and I can't save the draft.

When I try to access /wp-admin in another tab, it fails to load, even though other websites work fine. To continue editing, I have to open an incognito window, log into /wp-admin, and close the original draft tab—something seems to be locked.

I'm unsure whether this is a WordPress or web server issue and would appreciate any guidance on how to debug it. I've saved the console log, which might be useful: ​https://piks.nl/upload/upload/janvandenberg.blog-1724222179856.log