On Wikipedia, the editor edits a page, with the good old wikicode form.
After some time, the editor clicks "Save page".
Quite often, a bug occurs:
The site fails to save the edit. Instead, the site gives a red insult message ;-) telling the editor:
Some information related to the session has been lost. Retry.
The bug occurs when the edit takes a bit of time: 1 day gives the bug, 1 hour gives the bug, sometimes even 1/4 hour gives the bug.
--> The editor retries and the edit works. This is simple and works systematically. So why shoud the editor do this? The site could do this automatically. Or the site could avoid losing "the info" altogether. Anyway, this is a computer glitch that is currently exposed to the editor as meaningless computer jargon. The editor does not want to know about this. The edit is expected to just work.
It would be nice to correct this glitch. :-)