Thank you for playing. The shader has been removed in a patch (someone screen-recorded the flashing and it was not good, so I wanted it out in case of seizures.). On desktop the background was more pleasant imo, but in the browser it got weird. The shader was also the source of the loading speeds being dismal? Go figure!
The tooltips on the skills took way too long to pop up. They should have been instantaneous, so mistake on my part for sure.