Another update (0.5.8.1) of Lutris has been released:

lutris (0.5.8.1) groovy; urgency=medium

* Remove Proton from available Wine versions
* Display a dialog until Lutris finishes initializing
* Allow to keep game files when uninstalling a game
* Remove custom sidebar CSS
* Fix popup menu not showing in list view
* Fix script loading for local files
* Fix installed at column setting name for list view
* Fix lutris not launching games with rungameid
* Fix installed Steam game for fresh lutris installs

-- Mathieu Comandon Fri, 27 Nov 2020 14:23:48 -0800