Can't trigger completions in or before symbol.

[muirdm]

Using gopls, I can't trigger completion using company-manual-begin in cases like:

fmt.<>Print() // <> represents point

Completions only seem to trigger when there is no symbol postfix. VSCode can trigger completions in this case.

It seems like company mode itself can support this, so I assume something about the company-lsp backend prevents this from working.