I'm not able to reproduce. My summary has been saved correctly:
Can you give me instructions how to reproduce this?
Hmm :/ I tested it again: https://m.mediawiki.org/wiki/Special:MobileDiff/1245793
Used Chrome desktop and stable mode. Clicked the lead section edit, write down some test text and click save. In the "Summary" field i insert "Test submit" and clicked save. The edit is saved, but not the summary :(
Maybe LD this patch in the next SWAT? The latest wmf branch was created today (without this patch), so Wikipedias will get thid patch in 14 days, which is a long time :/
The edit summary is an important feature to summarize an edit, it's bad, that a users summary message will not be saved and a reviewer maybe think the user doesn't submitted a summary.
All patches mentioned in this report were merged or abandoned - is there more work left to do here (if yes: please reset the bug report status to NEW or ASSIGNED), or can you close this ticket as RESOLVED FIXED?