I made a post a few weeks ago regarding my tourist visa having my surname spelled incorrectly. Incase anyone was still interested, I done nothing about it, and at Immigration in Bangkok about an hour ago she didn't bat an eyelid.
TLDR : Answer Summary
The user reported their surname was misspelled on their tourist visa but stated that it did not cause any issues when they presented it at Immigration in Bangkok. Several comments followed, sharing similar experiences with name inaccuracies on official documents but noting that such errors often do not lead to complications.