There appears to be something wrong with NS FontAwesome Pro update via Joomla Update.
Every time that I try to update the extension through the Joomla updater it results in the custom templates applied to specific menus to fail - reverting them to use the Default Template.
There are no error notices in Joomla after the NS update.
When I do a manual update (i.e. download the latest version, manually install using Joomla extension install) the extension work fine and all the custom-assigned template automatically work again.
This has happened on the past 2 updates (possibly more as I got behind on updating for a while).
Although there is a work-around for the bug (ie. manually installing) it would sure be nice to have the Joomla update option working properly.
NOTE: This effects all templates, not just specific ones from specific vendors. It is happening on Joomla 3.8.x