Helm serach gives up on small strings

Hi!

This is a copy of issues that I have with both `rifle` and `ql`: https://github.com/alphapapa/org-rifle/issues/67, see my last comment there.

Basically, sometimes, when the request is too heavy, helm refuses to proceed, as if it times out. And this seems to be reproducible in a very weird way, with bare emacs even. Does anyone have any idea of how I could debug it?