Minecraft bedrock special name?

I had created a minecraft bedrock / x box acc before jaren and my name in Minecraft windows 10 is Mole 3 (with a blank) is now a rare name because there are actually no blank names or I have never seen them

This is normal, for example on the Playstation you have to separate your gamer tag / nickname with _ because spaces are not supported, but on Windows / Xbox. It is common there. For me it looks like this: Xbox: Sir Jean Java: Sir_Jean