[MiniSQ]

I've used the following with some success;
RadioShack #6400148
CRC QD Electonic Cleaner #05103

Its more of a physical issue than than a contact issue. The stem is wobbly. Like its out of joint.

 

[MiniSQ]

Any fix on this? Mine randomly started doing the same thing. It’s all wobbly.

No fix that i have been able to find. Yup mine is also all wobbly.

 

[MiniSQ]

When in doubt of a mechanical (or, really, any) problem, the hammer is your friend! And if that doesn't fix it, try a 5lb metal mallet.
No, they might not fix the problem but they'll definitely scare the hell out of your Crosstrek from causing any future problems.
This is all scientifically-backed fact...

I'm just afraid of really laying into it with a hammer, as i don't want to make it totally unusable. But boy am i tempted!!

 

[MiniSQ]

I just bought a used 2019 crosstrek only to discover the same issue after driving off the dealer lot. Also looking for a solution.

I think in your case, you go back to the dealer and get a new radio.