you’re probably suffering from the same problem as the french
(no, not ego, the dot/comma problem)
that’s what I ended up doing on my PC, as I mostly use it for SU (and for classes), although, it’s weird your computer don’t seem to keep the info. maybe the switch from US to bulgarian layout is causing the reset ?
from what we understand, the decimal key in the numpad reads as decimal key. if you set your computer to use a comma, then it’ll read as a comma. (like in most of europe)
But in Sketchup, since probably version 7, this key is read as a dot, no matter what parameter you choose.
therefore, when using a SU version in a language that uses commas (french, apparently bulgarian) you still get a dot. then only way to go around is to ask windows to use dots for decimals. or to use actual comma.
SU is the only software I’ve met that does that, read the decimal as a dot key regardless of the user’s choice.
In July, colin mentioned an existing bug report on this, no news on this front since.