Hey there, since my update to Sierra a few days after release I'm seeing an issue that slowly steals my patience: Whenever the mouse cursor changes (like when you hover over the edge of a windows and get these double arrows or that single slim vertical line in a text field) it doesn't change back or only changes back in a weird way. It looks like this is primarily an optical problem as the click point still seems to be where it should be with the cursor that is intended do display at this point. The weird thing is that it's totally hard to do exact clicks in for example graphics software at this point. I'm using an Apple Magic Trackpad and a Logitech MX Master over Bluetooth. No matter which one I use or if i disconnect on or the other (or even remove the Logitech Options software) this behaviour doesn't change. To me it looks like this is not tied to a special mouse or the Bluetooth connection but more like a software problem.
I already thought about which Software that I have installed and that may interfer here but I couldn't find the reason so far. Has anyone seen this issue or heard of it? May this have to do with the graphics Driver (Using a GTX970 with a Dell UP2715k Display). Already tried removing/closing SwitchResX, BetterTouchTool and others but didn't help unfortunately. Any help would be highly appreciated.
![Set Set](/uploads/1/2/5/5/125524170/248028107.png)
Thanks, Frank. Yeah, the cursor changes about half way across the screen (Right - Left) as if span mode is corrupting how the screen is setup (2x DP connections). It is very random, but seem tied to how the Mac sends/receives the signal from the 5K 2x DP connection. The worst part is that it jumps and skips when it changes icon, when the mouse is on the LEFT half of the screen. Not sure if it's anything but in 'about this Mac' - 'Displays' it says 81,5-inch (5120x2880).
A relatively minor new feature in OS X El Capitan that has surprised some users is the “shake to locate cursor” option, which temporarily makes the user’s mouse or trackpad cursor much. MacMost forum question: How Do I Change the Mouse Size on Mac OS Sierra? Have a new mac mini with sierra. Mouse size is too small. Have a new mac mini with sierra. Mouse size is too small. How do I permanently make it larger? Typically, if someone is having trouble with the cursor size, then.
Quite a large screen! Anyone who can chime in on what we can try?
Please make a test, if you can provoke the mouse error with these steps (follow all! Its important) 1. Boot with the screen on. When all system/apps are loaded go to next step 3. Make sure you click both 'screens' with the mouse (the display should be SPLIT INTO 2 SCREENS, because of the 2 displayport connections, but not running 5K yet), making the menubar translucent and non-translucent.
Do this several times. Now click the off-screen (so you have a translucent menubar on your display) 5.
![Sierra Sierra](/uploads/1/2/5/5/125524170/626454885.jpeg)
Shut the monitor off, wait 5 seconds, now turn it on 6. See if you can provoke the stupid mouse error.
I tried this 2 times opening a few programs and messing about with mouse icon changes, and couldn't f.ck it up. Maybe you can. If I don't follow these steps, I can provoke the mouse error in 3 seconds (just enlarge Application Menu in the bottom, and bam enlarge icon stuck on left screen). Good luck, I hope this can be a workaround for now.