Comment 1 for bug 1719482

The tab issue seams real but I suspect it's only a cosmetic issue (at least we never had any similar reports and I doubt there aren't any other users whose name starts with a "t").

As a first test could you try launching "inkscape.com" from a command line instead of inkscape.exe (provided that you did not already did that)?
Due to limitations of Windows the .exe won't ever generate any output on the Windows console (that's why we ship the .com wrapper).