Clicking on the + button should not take you to the comic
When you are surfing through the comics looking to add them to your "my comics" list you should be able to click on the "+" button to add them without being taken to the first page of the comic - more often than not there's more than one comic on that list you're trying to add.
I created a userscript for this feature:
You can always right click on the + tab and open in new tab, that's what I do, and it still adds to your list. This helps if you find a new comic you want to read, and to follow it whilst not losing your place on the browsing page so you can keep searching :)