colon seems to break nvim-cmp autocomplete

[johannesrld]

bit hard to explain, basically when im typing a package name, after I've typed the colon to access some function or symbol in the package, autocomplete doesn't show up anymore.

e.g.

1. type (ql:) manually
2. completions break at this point, e.g. typing (ql:qui) doesn't show ql:quickload

if I want quickload or any other function/symbol to show up I have to:

1. type (ql:) manually
2. exit into normal mode and then reenter into insert mode
3. type any letter after the colon ((ql:a), (ql:b), etc)
4. exit into normal mode again
5. then reenter into insert mode and delete the character i added, at that point (ql:) correctly shows autocomplete