Mouse cursor disappears.

I have found that three-finger swiping to another screen and then back is the fastest way to recover the mouse. Very irritating bug

Grrr!

Same problem here. Never saw it until Mountain Lion. I clean installed Mountain Lion and rebuilt my system from scratch. Photoshop CS5, Wacom Intuos 4. Mouse cursor disappears while working in Photoshop. Workaround is to Command+Tab thru several apps and return to Photoshop. I have reported this on Adobe's Photoshop user forum, where it is considered an Apple bug introduced by Mountain Lion.

I have the same problem but I am running Mac 10.6.8 Snow Leopard on MacBook Air. The screen goes black. Eventually, I can press on the return key and get back in. But, when the screen returns to normal, the cursor has gone However, I am able to enlarge the items in the tool bar by running the invisible cursor over them. Eventually, the cursor returns. I am on my eighth crash tonight. Not a good day.

I notice this also when there are multiple bluetooth devices in the vacinity... especially bluetooth trackpads or mice. I shut bluetooth off and there is no more interfereince from other bluetooth devices.

I have bluetooth off but cursor still disappears

Wow, is Apple UNRESPONSIVE or what?!? I have a comparable issue with my cursor behaving at the left and top portions of my screens but not the bottom and right portions where it goes off and thus disappears until brought back.

Apple does not read these support threads. This is a user to user support community. Try repairing disk permissions in disk utilty app.

Message was edited by: Carlo TD

Thanks, Carlo. I believe that a reasonable expection of users of "Apple Support Communities" is that the most successful corporation in the U.S.A. monitors support threads if only in China where it has outsourced so much of its operations. Anyway, I did try your suggestion (but did not reboot) and the cursor continutes to exit the same two margins. Perhaps there is some setting which indicates monitor dimensions different than as they appear.

Is it random? Is it intermitten meaning... one or two seconds lasting? There is another place to seek help. I think as another user... we have the ability to help each other better and can share things faster.

No, it's chronic not intermittent. But, it happens when I take the cursor to the bottom or right sides of the screen. My Apple daughter looked at it and thinks that it might be to "hide the cursor" but should be changeable.

I have this problem only when I use Safari (also Webkit). I do not have it with Chrome or Mozilla's Camino. Though others reported it when using Mozilla's Firefox

I found my cursor disappearing when using Safari, but not with Chrome or Camino. I read on a Mozilla page about the same problem happening with Firefox. There the solution was offered to empty the cache and remove all cookies. I did this for Safari and the problem was gone. Use 'set back Safari' or similar under 'Safari'. It's 'Safari zuruecksetzen' in German. There is probably a cookie disturbing the cursor action. May be somebody tries to track our cursor movements.......

For me the cursor is disappearing frequently when I am using Word and Filemaker and sometimes Firefox. As I indicated above, 3 finger swiping to another screen and back recovers the cursor.

I suspect that this is happening where the cursor size (Sys Prefs/Accessibility/Display) is set to larger than "normal" in a previous version of the OS (in my case Snow Leopard). Maybe there is a way to trash the prefs for this selection and start afresh?

Well, my newest idea is that the cursor disappears when you have to monitors connected, which are not sinced, different things displayed. Then, using on one of them Safari (or its webkit) in full screen mode. Then the cursor disappears on the other monitor. If you dont use Safari in full screen mode, but Chrome or Camino, the cursor stays, no problem. Even if you use Safari on the other monitor (as long as it is not in full screen mode). Emptying the cache or resetting the preferences does not really help. I withdraw my previous post........

this is a mountain lion bug,

nothing related to apps you are using.