Filtered mirroring behaving as not intended

[skorpion]

Dear devs,

Maybe I am confused, pls enlighten me.
I want to mirror a folder to another place, except one file/folder in the parent folder. Should be easy with an exlusion filter, but I've ran into a problem. Follow my lead:

On the left side there is the folder we want to mirror, it includes several folders and files. We do the mirroring, it happens as it should, the right is the exact same. We are happy.

One month later at the next syncing we decide to exclude one folder/file from the process, because we don't want to back it up. We apply an exclusion filter and click the mirroring.

Instead of deleting on the right, it just skips processing that folder-pair and leaves the unwanted thing in the destination folder. We notice a drop in happiness, but not that bad.

I would expect the mirroring to mirror the structure on the left, with all the filters applied, in this case delete the filtered folder/file at the destination.
As this case showed, there can be folders/files which are bypassed by the process, therefore the destination is not a mirror of the filtered source.

I know that I can deal with it manually, but then I wouldn't use such program.
What are your thoughts?

[xCSxXenon]

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[skorpion]

Oh, okay... Then I'm not the first. Probably not the last. :/