Pano misbehaves with (Neo)vim about gnome-shell-pano HOT 1 OPEN

unnamedplus	A variant of the "unnamed" flag which uses the
			clipboard register "+" (quoteplus) instead of
			register "*" for all yank, delete, change and put
			operations which would normally go to the unnamed
			register.  When "unnamed" is also included to the
			option, yank and delete operations (but not put)
			will additionally copy the text into register
			"*". See clipboard.

To ALWAYS use the clipboard for ALL operations (instead of interacting with the "+" and/or "*" registers explicitly):

set clipboard+=unnamedplus

See 'clipboard' for details and options.