How can I stop height tab to change when I hover over them?

I use Firefox 29. When I move my mouse over any tab, the height of all tabs climbs to about twice the height, they are when I do not hover over them. I do not like this behavior. I'd rather have the tabs remain the same height if I hover over them or not.

How to disable this behavior?

If you have not already... To see if one of your extensions is in question, could you test mode without failure of Firefox? It is a standard diagnostic tool to disable some advanced features of Firefox and extensions. More info: questions to troubleshoot Firefox in Safe Mode.

You can restart Firefox in Mode safe help

Help > restart with disabled modules (Flash and other plugins still works)

In the dialog box, click on 'Start mode safe' (not Reset)

Any difference?

Firefox has bigger tab graphic images for displays "high resolution". But I expect the size to be determined once and does not change when you move the cursor or stop... hovering, but to adopt this thought:

  • What is your default zoom level in Windows? For example, it can be 100%, 125%, 150% or a custom value.
  • If you have manually customized the preferences of Firefox "layout.css.devPixelsPerPx", what is its value?

To verify that a second:

(1) in a new tab, type or paste Subject: config in the address bar and press ENTER. Click on the button promising to be careful.

(2) in the search above the list box, type or paste the pix and make a pause so that the list is filtered

(3) find layout.css.devPixelsPerPx on the list.

  • A value of-1 means Firefox will use your zoom level of Windows to the size of the text and images on your toolbars.
  • Any other value is applied instead of your zoom level of Windows, multiplied by 100, so 1.2 gives you the text and images larger than the old standard of 120%.

Please do not change this value, which will only make things more confusing.

Tags: Firefox

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