My apologies if this is the wrong product or component, but I noticed this: Bug descriptions (seem to) use "[kerning]" for kerning problems (horizontal alignment most of the time) and "[hinting]" for pixel placement for small sizes. I'm missing one thing that is related, but neither [kerning], nor [hinting] (IMHO): [metadata] or [fontinfo] Why? I had a problem with LibreOffice (and OpenOffice) with dual page alignment ("Registerhaltigkeit" in German, I'm missing the correct english phrase): When I changed one word in a paragraph from normal to italic, line spacing "exploded" (i.e. LibreOffice added extra blank lines above or below the italic word) Needless to say that first, you don't want that, and second professional fonts don't have it My guess is that the different "cuts" of the font use sligtly different font information for ascenders and descenders (or maybe even worse: the ascenders and descenders actually differ in the glyphs) So if you have one font family (as Deja Vu is expected to be), the font info should be adjusted for a true family look, also.
I don't think we have any hard and fast rules about tags. Feel free to tag and file your bug in any way you like, as long as title and description are clear. Obviously what you described should not happen, could you include a screenshot and upload an example? PS: Die englische Bezeichnung für Registerhaltigkeit lautet "register-true".
Use of freedesktop.org services, including Bugzilla, is subject to our Code of Conduct. How we collect and use information is described in our Privacy Policy.