Veros said:
The way I was able to work around it was by using an extension to inject custom CSS on the page to hide the container around the list of tags (since I just scroll through the pages anyway).
Originally, I used uBlock Origin to do this with Opera 44:
alpha.wallhaven.cc##.sidebar-section:nth-of-type(3)
I had to use the element picker from Chrome to do this. This removes the entire list of tags but keeps the User Subscriptions and User Uploads sections untouched. The page works fine. Then I thought about what you said regarding the custom scroll bar, so I changed it to this:
alpha.wallhaven.cc##.vertical.scrollbar
The page still loads and works fine like with the previous filter except now you have the list of tags that scrolls. The freezing must definitely have something to do with the scrollbar.
I'm not having any problems with the subscription page on Chrome 57 like you guys are; only in Opera.