@actyler1001 Have you resolved this yet?
I have been following this and another thread with similar results. They are on Ubuntu 20 with the same CA cert store version as you and similar symptoms.
Their core problem was they had earlier (and mistakenly) added the R3 intermediate certificate indirectly to the CA store.
Here is their solution. The post by Nummer378 just prior to that describe their situation well. I could not help connect your problem to theirs so hopefully this helps you too.