For issues you find with the Switch and Console releases, please follow this link and give as much detail as possible. This is the speediest way to get info to Pipeworks and get a hotfix in the works.
For issues you find with the Mobile 1.3 update, please follow this link and give as much detail as possible. This is the speediest way to get info to DR Studios to look at your issue. Also, some troubleshooting hints here.
And besides that, I really think the developers got a lot more time and budget on their hands to actually add mod support. And correct me if I'm wrong, but I don't believe you can play mods on PS4 and Switch, because Sony and Nintendo don't support mods in general
True, 505 did an amazing job bringing it in the market. It's a well-known indie game publisher so it's amazing Re-Logic was able to release non-PC Terraria through them. Pipeworks and DR studios did a awesome job as well. The ports honestly couldn't get much better than they are.
You can fix the drift without replacing the sticks. You gotta look up the details yourself if you wanna do that, but I know for a fact that it's much cheaper than replacing the sticks altogether. Something with pressurised alcohol or something.