Text Boxes won't Scale or Flip
IllustratorCC 22.0.1 running under OSX 10.12.6
Select text box and either attempt to flip (Reflect tool using vertical axis) or scale using the Scale tool. Scale fails both dragging to scale, or double-clicking the Scale tool and inputting numeric scale value.
Text box scales or flips horizontal, as in all previous versions of AI.
Error message reading: "Can't scale the objects. The requested transformation would make some objects too large."
Ken P commented
This has happened to me when I've also inadvertently selected a guide at the same time. The guide is usually the culprit... it is "too big" to do some things.