Mouse cursor disappeared on external display when rotated I have a MacBook Pro 13-inch 2017.
My macOS High Sierra has the version 10.13.4 (17E199).

So my problem is that, after the last macOS update, my 2nd external monitor doesn't show the mouse cursor anymore. This monitor was rotated 90°.

What I tried:


rebooting 
making the cursor bigger (read that tip somewhere)
when shaking the mouse the cursor is shown in big but the hides again
when rotations is set is to default the cursor is there again
when in any rotation both external monitors doesn't show the cursor


So anybody has a idea to fix that?
I actually just solved that problem on my Macbook Pro.

Tried all possible solutions. What worked was to make the cursor bigger.
However, depending on your screen resolution you will need to play with different sizes.

There is a discussion in Apple forums with more details: https://discussions.apple.com/thread/8342495