@LSATJedi Thank you for letting us know about this! It looks like annotations stopped working on SurfaceGo. We are investigating and will let you know when they are working again.
@"Alan Cheuk" I'm afraid it was not a typo: I just double-checked now, and on my SurfaceGo, underline doesn't work in the Chrome browser. I also tried the LSAC sample on my device, and there the underline was working. Sorry for the trouble!
Yea on the proctoru homepage it specifies ios and android os tablets are not supported. So long as you switched out safe mode for windows home on your surfacego it should be good.