Boolean OR not working as expected in Task filter

[viccro]

Things I have tried

not done
(heading includes work) OR (description include  #work)

I’m referencing:

• the Quick Reference for filters
• the Tasks page about Combining Filters

I’ve found that both individual filters work; it’s just the combination that’s not working. That is, both of these work correctly:

not done
heading includes work 

and

not done
description includes  #work 

(Note the required double space before #work here)

Bonus question: I also cannot get tags include #work to parse at all, so I’m using description as a hack.

What I’m trying to do

I’m trying to create a Tasks query to grab tasks with either:

1. a heading containing the word “work,” or
2. has a tag of #work (so that I can label tasks inline)

Please and thank you!