I know this plugin is marked deprecated, but I would not expect outright breakage with as widely as it is used.
Known to be working on a 2.263.x instance, known to be failing on multiple 2.277.x instances.
I saw another issue with a report that there were problems with the UI display on 2.277, which I have noticed, but never noticed the breakage in adding an SCM until now.
|Field||Original Value||New Value|
|Status||Open [ 1 ]||In Progress [ 3 ]|
|Resolution||Fixed [ 1 ]|
|Status||In Progress [ 3 ]||Resolved [ 5 ]|