Hover visual glitch with Chrome with 12.1

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I tried on other computers with Windows 10 and I cannot reproduce the problem.
On my PC with Firefox and Edge the hovers are correctly displayed....

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Actually I cannot reproduce the problem at home on Linux or Windows 10.

Monday I Will try at office on other machines.

[claudio]

Hello, I'm having a visual glitch with hovers on buttons, but it seems that is a general problem.
To view the glitch you can open the showcase...