A detail about kerning/tracking that seems to have slipped through the cracks: how text and tabs interact with each other in Indesign.

I noticed this while doing fillable forms with underscores. The space after the type wildly varies in distance, and from what I can tell, there is no way to automatically or manually adjust it. I tried switching kerning between manual and optical, with no results. I tried manually adjusting the kerning, which doesn't affect it either. The spacing seems to be related to the length of the text.

A visual example:
Address____
ZIP code _____

A future feature I would love to seer: automatic equalization of the white space between tabs and words.