I think that describes what I'm seeing as I look at this bug. When it works, All Languages should both update the indent/tab settings in your profile, and also update the per-buffer indent/tab settings for any open buffers. The bug prevents this for Verilog, SystemVerilog and some other languages. Curiously, the same functionality works for the Tools -> Quick Start Configuration, so if anyone needed a workaround for this before we fix it, that would be it.