Happened across all repos today. When I try to commit files larger than 2 MB, I get a warning in Sourcetree that the file isn't tracked by LFS. (spoiler alert: it's tracked just fine)
The .gitattributes tracks this file extension, and always did.
I go into command line and make a commit in there, then I push and I can see that it's using LFS just fine to upload the files.
"git lfs track" and "git lfs ls-files" confirm this. Changing from System Git to Embedded Git doesn't help. Updating system git and lfs doesn't help. Reinstalling Sourcetree and rebooting doesn't help.
The problem may have started after the latest update.