Search operator not working as expected with tags

In this search, devonthink is interpreting operator OPT as part of the tag:

Is there any way we can fix this?
Thanks a lot.

I doubt that you can use search operators with tags like that

This isn’t currently supported. OPT is used in textual content searches, not for tags. Development would have to assess extending this.

Currently a construct like this could be used…

tags:r5 {any: tags:r5;fav}

Thanks! This one would suffice.