Comment 2 for bug 1688985

Markers are a rather new feature, and none of the 3 currently active of us have a Mac with Retina display or other HiDPI device. HiDPI display issues can only be tackled by somebody having a HiDPI display. We 3 don't have one. You deal with markers already and have a HiDPI screen, maybe you can add a fix also here? There were some additions/adjustments for HiDPI/Retina/4k, but Alex knows more where in the code they may be. Fixes for the markers will likely be similar.