Update plugin/theme maintenance message

[paaljoachim]

Hey

The message that shows up when updating plugins or themes should not remove the visible site. Instead it should keep the old plugin/theme until it has finished updating and then smoothly change over to the new without disrupting the frontend of the site.

On fatal error it should automatically revert to the old and just give a message in the backend that it could not update to the new plugin/theme because of whatever reason. Then a message saying let the author of the theme/plugin know about the error.

[desrosj]

Hi @paaljoachim,

Can you clarify the message you are talking about? Is it the Briefly unavailable for scheduled maintenance. Check back in a minute. message? Is there a list of steps someone could use to reproduce the issue how you are seeing it?

[paaljoachim]

Hi @desrosj

"Is it the Briefly unavailable for scheduled maintenance. Check back in a minute. message?"

--> Yes.

I am thinking that there should be a better way to handle updating plugins and themes then disabling a site with the above message.

[SergeyBiryukov]

Related: #34676