Admin Menu Structure Problems

The Problem


In Chrome, the sidebar menu items in the wordpress admin dashboard sometimes load incorrectly, causing the menu structure to appear corrupted on mouseover events.  This is a known issue in Chrome v45 and above.  

The Workaround


Here is a forum post from Samuel Wood outlining the problem and a fix (source)

"Chrome 45 has a rendering bug. There is a ticket open on Chrome's bug tracker about this issue, hopefully they will fix it soon.

In the meantime, here is a workaround to eliminate the issue in Chrome.

- Go to chrome://flags/#disable-slimming-paint
- Enable the "Disable slimming paint" option.
- Ensure that the "Enable slimming paint" option below it is not turned on.
- Relaunch Chrome.

When you're done, the final result should look like this:

This will disable the problem code in Chrome and allow the menus to render normally."

IMPORTANT - Be sure to hit the "RELAUNCH NOW" button to get the change to take effect, it is not enough to simply restart Chrome, it must be relaunched.

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