Which means that they just checked and fixed the quickedit but not the normal left and right pushback.
No, it means Left/Right never had any problem to begin with, the bug which lasted only a few days, was only related to QuickEdit (or even pre-created Custom Pushback, anything the involved the Editor), it couldn't possibly happen in a normal Left/Right pushback so, either the problem doesn't happen in Left/Right, or it's a completely different problem, so I really need a new accurate report.
To clarify better: the problem was because the whole simulation wasn't re-enabled back after *exiting* the Pushback Editor, because the QuickEdit sequence has been moved later, which caused controls not working or engines not starting, which is what has been reported in the first post. This specific issue can't possibly happen anywhere else than on exit the Pushback Editor.