This is similar to lsp-mode: disable documentation popup, but not the same issue.
Whenever I use lsp-mode and the company completion menu pops up, I get these annoying multiline-popups in the bottom of the window:
I tried the settings in the documentation, but could not get rid of them. How can I disable this behavior?

company-*options? Try completion on that and see if any options sounds relevant to your problem. IOW, it may not belsp: it may becompanythat you have to concentrate on. BTW, this is all complete guesswork.eglotandcompany, only withlsp-mode.