Search filter "NOT" not working as expected

[Acenoid]

Before raising a bug report, let us check if I made a mistake. Since views are limited I wanted to ensure that all topics for a adventure have the same "tag" attached to the topic. Luckily we have the bulk tagging.

Now as parent container I have several "permanent" tags provided, these topics should be in all campaigns / adventures , so they don't need to have the tag of each separate adventure.

I wanted to do the following:
1. Filter by view for the adventure
2. Add a search Add Story Tag "NOT" permanent
3. Bulk tag "Adventure #1"

Expectation is that the permanent topics would disappear from my selected view after step 2, but it is not happening always, making this feature unreliable.

This is how it looks after Step 1:
All topics below are part of the same view called "R1 S-Tec"

*Event List*
Topic: Plots {Permanent Ŧ}
Topic: Reputation {Permanent Ŧ}

Topic: Recap {Permanent Ŧ}
Contained Topic: Recap 2017.07.28 {R1 S-Tec Ŧ}
...


After Doing Step 2 it looks like this:
*Event List*
Topic: Recap {Permanent Ŧ}
Contained Topic: Recap 2017.07.28 {R1 S-Tec Ŧ}
...

Here is what I have selected in the search:
https://i.imgur.com/qv9mwie.png

Conclusion:
The "Recap" Topic should have disappeared in my opinion.


Any ideas?