What invisible unicode character is shorter than U+3164 and works?

[ENDERIUM]

U+3164 widthspace: [ㅤ]
I need help. Is there anything shorter than U+3164, invisible and working in the forums? My username has an annoying space behind it.

 

[ENDERIUM]

why is nobody reply

 

[Silco]

why is nobody reply

Your technical expertise has well and truly baffled them

 

[ENDERIUM]

Your technical expertise has well and truly baffled them

mind control eeeeee

 

[Cathie]

my brain