Minimizing/maximizing/close icons are very small
I just installed 3.34.2 and compared to the version shipped by my distro (Lubuntu 18.04) it is way better and I like the modern look as well. However compared to the older version, this version has very small icons. I know Evince uses gtk3 as reference but please consider also those from different platforms and who enjoy evince. I have a normal 15'' laptop and they look small, I don't want to imagine what they look like on a bigger screen.
I am posting a screenshot: https://imgur.com/nfvZnTV
Could you make them a bit bigger?