Items dont re-optimize when source file deleted

Server: 1.15.5.994 (windows)
I also get this issue, if the original file for an optimized version gets replaced.
I have to go into Settings > Optimized Versions, click Edit on the specific job, then scroll and find the item in the list where it will say deleted and has the refresh icon to retry. It won’t do it by itself and the job will still have the green tick with Complete.