Is there any way not to have space after the snip?

[NexganGH]

I would like so that after I complete a snipp, not to have the whitespace after it.
For example, inside a block \(\) I type:
\(Sigma\)
But it gets completed to:
\(\Sigma \)
Which means I have to backspace and exit the context with the arrows.

[Alex2134556]

When you define your snippet, make sure there are no spaces at the end of your text.
So the body of your snippet should be "\Sigma" and not "\Sigma ". If this doesn't resolve the issue, send the snippet code and we can check.