Haven't seen a crash when doing save of draft, even to a subfolder. So not sure what's going on there. I did notice that editing drafts in subfolders didn't replace the original message but added a new message. This is because the subfolders were not having the ::Drafts flag set. When I set the flag for them, edited message get replaced and a new message is not added to the subfolder. Also, yes, my patch doesn't help newgroups. For them the edit from a subfolder always goes back into the top level Drafts folder in Local Folders. (Not sure if anyone uses newgroups anymore so may not matter if this features isn't present for those accounts?)
Bug 263114 Comment 46 Edit History
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Haven't seen a ~~crash~~ (edit: comment 45 shows a error, not a crash) when doing save of draft, even to a subfolder. So not sure what's going on there. I did notice that editing drafts in subfolders didn't replace the original message but added a new message. This is because the subfolders were not having the ::Drafts flag set. When I set the flag for them, edited message get replaced and a new message is not added to the subfolder. Also, yes, my patch doesn't help newgroups. For them the edit from a subfolder always goes back into the top level Drafts folder in Local Folders. (Not sure if anyone uses newgroups anymore so may not matter if this features isn't present for those accounts?)