I try to make atomic commits, which results in creating commits in small batches of files.
When committing such a batch, a next file is selected in the "Unstaged Files" window, but the "Stage Selected" button is greyed out, as if there is no selection.
The workaround for this problem is to just select a different file and then re-select the first one, but this really seems like a bug. Additionally, when only one file is present, the "Stage Selected" button remains greyed out and can't be triggered to refresh (because there is no other file to switch to).