On which screen size do you experience this (width, especially)? The ad placement should adjust itself according to screen size, but apparently these ads don’t properly collapse on your screen width.
There was an update in Tabler that changed how dark mode was invoked. The client area now generates the right tags.
Thanks. That’s out of my control, but I’ve reported it to the people who manage the ad sizes.
The side ads are only visible on larger screens and it should select an ad unit that fits in the available space. But apparently, the cutoff points for which screens accept which ad sizes aren’t set correctly.