denops.vim does not work if `runtimepath` contains `*` (Neovim 0.6.0-dev)

[lambdalisue]

Wildcards are allowed in runtimepath

	Note that, unlike 'path', no wildcards like "**" are allowed.  Normal
	wildcards are allowed, but can significantly slow down searching for
	runtime files.  For speed, use as few items as possible and avoid
	wildcards.
	See |:runtime|.

But denops.vim does not assume that so it would break denops.vim

Appendix

Neovim 0.6.0-dev use that for some reason and that break denops.vim (neovim/neovim#16031)