Aha! I think I fixed the targeting issue, T key should now properly lock on to current target or unlock target if you already have a locked target.
On further inspection, the mobile thrust hack should only be onscreen and clickable if your device is detected as a"mobile device", or if your resolution is at least 99,999 pixels wide. Not sure why either would apply, but the mobile device check is very much copypasta. I think the thrust/shoot toggle does show up the options menu (O key) can disable it but I'm not actually sure.