When I create a text box that has auto-size (width only) enabled and then insert a text variable (e.g. "modification date"), the entire text variable is collapsed into the width of a single character. It is as if the dynamic width of the text variable causes a bug in the calculation of auto-size, such that the width cannot be determined, and so it all collapses into the width of a single character instead, with all of the characters rendered one on top of the other.

Very disappointing bug, because dynamic text variables and auto-size are a natural fit for one another.