UserAgent: Mozilla/5.0 (X11; CrOS x86_64 10888.0.0) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/69.0.3494.0 Safari/537.36
Platform: 10888.0.0 (Official Build) dev-channel zako

Steps to reproduce the problem:
1. Connect monitor via DisplayPort;
2. Set DPI scaling to a value greater than 100%;
3. All elements in the UI scale up, but become unclickable, rendering the monitor useless.

What is the expected behavior?
DPI scaling increases the size of the UI without rendering it all unclickable.

What went wrong?
Before this dev version, monitors with vertical orientation with DPI scaling activated had portions of the screen that were unclickable. With this update, that part has been fixed, but in my dual-monitor setup, with 1 vertical monitor connected via HDMI and a horizontal monitor connected via DisplayPort, all of the UI in the latter has become unclickable. Also, when DPI scaling is in use in the DP monitor, the UI doesn't render on it at all, the only element that is rendered is the mouse cursor, the rest is pitch black.

Did this work before? Yes .0.3486.0 (Platform version 10866.1.0) IIRC

Chrome version: 69.0.3494.0  Channel: dev
OS Version: 10888.0.0
Flash Version: 30.0.0.134

DP monitor is an HP Z27n.