Searching with the Main Tag only

[UtkC 0]

I have a ton of notes tagged in a nested form. Like I have tag TL1 at first level. Some notes are filed under this tag. Then I have two tags nested under TL1, TL2 and TL2.2 and notes filed with only these two tags, not TL1. This is the way I organised my notes till now. After the update on Windows, whenever I click TL1, I expect to see only notes with tag TL1. But instead I am getting all the notes in the nested tag tree, even if they are not tagged by TL1 but by children on TL1 (ie TL2 and TL2.2). This is quite frustrating now, since I have hundreds of tags like this and I am not able to find them, even using search. Kindly help out.