[renamerOnUpdate] Match and replace seems to not affect $title but $tags

[Sascha353]

I have a problem with the match/replace function. Replacing a string in the $title does not work for me.

Desired behaviour: Old filename example: "Test Video [tag 1 tag 2 tag3].mp4" I want to rename files based on a specific tag:

tag_templates = {
    "tagging": "$title [$tags]"
}

New filename before regex: "Test Video [tag 1 tag 2 tag3] [tag 4 tag 5 tag6].mp4"

Also I want to remove the existing [$tags]-string from the filename, to avoid having a file name like that: "$title [$tags] [$tags]". For that I'm use this regex to match for the [$tags] pattern:

replace_words = {
    r"\[[^\]]*\]": ["", "regex"]
}

expected filename after regex: "Test Video [tag 4 tag 5 tag6].mp4"

Actual behaviour: Renaming based on the tag_templates work but the regex is only applied to the newly added [$tags], not the the [$tags] which are already inside the filename ($title). So in fact there is no change to the filename then. I also tested with a simple "any or word" regex on part of the $title, with the same problem. "FHD" in the $title is untouched and "FHD" from $tags is correctly changed.

replace_words = {
   "FHD": ["test", "any"]
}

New/old filename: "Test Video [tag 1 tag 2 tag3].mp4"

By the way I'm using: filename_as_title = True but it also doesn't work if it's set to false. Also I do know that I potentially need to make the regex not greedy to avoid that both [$tags]-pattern are matched but for that it needs to affect the $title in the first place.

Is this as designed? If not, what could I try to fix it or if yes, what would I need to change in the "renamerOnUpdate.py" to make it work as expected?