Suppress Python function signature popup

[BackSeat]

When the cursor is on the opening parenthesis of a function (normal mode), I get an info popup which obscures the lines immediately above. I'd like to stop (or possibly move) that popup.

I've tried let g:lsp_signature_help_enabled = 0 but the popup persists.

How can I stop it?

[BackSeat]

Mea culpa: this was caused by YouCompleteMe. Sorry for the noise.