I agree Baloo. Since the "Like" is now integrated into "Reactions" there need to be a notification (just 1 will do) that is like you said: "Member1 reacted to a... Post or Image" Of course link to the post/image that the member reacted to :) This needs to be done ASAP. I have users on my site reacting to posts but nobody knows they are so, it looks like nothing is happening at the site. 

Also for UNA 10 Notifications in general, even when UNA.IO website was updated, the notifications were not completely working but seem to be now. Do we need to do anything after the upgrade such as disable/enable the notifications module or should they be working right off the bat?