https://bugs.winehq.org/show_bug.cgi?id=55868
--- Comment #11 from vt vturek@centrum.cz --- (In reply to Bernhard Übelacker from comment #9)
With the patch applied, the horizontal tab characters are rendered -- in some fields/applications properly, in others as rectangles (just as you mention in your comment). But they _do_ render, which is better than not rendering them at all.
My Wine config only used "Windows 10" so this nuisance may be related to the actual component used by the respective application. I have observed it even in winecfg (e.g., on the Disks tab -- see the attached screenshot with the pasted text copied from Featherpad).
This patch shows at least one flaw, because after pasting text with a tab the cursor is rendered at the wrong position. (In the middle of the last word, not at the end.)
True. The cursor placement is also wrong when deleting characters in a field containing horizontal tab(s) using DELETE or BACKSPACE irrespective of whether a "regular" character or a horizontal tab has just been deleted.