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Cannot customize toolbars by dragging/dropping buttons

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I enable the Customization mode by clicking on "Customize..." in the right-click popup menu of a toolbar. Firefox enters the customization mode just fine. I can grip any existing toolbar button (the cursor changes to the hand wnen I am over it), then I can drag this button... Oops! The only place I can drop it is exactly its old position! Elsewhere, the cursor changes to that crossed ring that means no. Cannot drag buttons between toolbars, cannot pick up buttons from the well in the middle of the screen and place them, cannot remove buttons, cannot rearrange. The only thing I can do is to take a button for a walk, and drop it back where it was.

Is is a known problem with a known fix?

Firefox 31.3.0 esr on Windows 7 64 bit.

I enable the Customization mode by clicking on "Customize..." in the right-click popup menu of a toolbar. Firefox enters the customization mode just fine. I can grip any existing toolbar button (the cursor changes to the hand wnen I am over it), then I can drag this button... Oops! The only place I can drop it is exactly its old position! Elsewhere, the cursor changes to that crossed ring that means no. Cannot drag buttons between toolbars, cannot pick up buttons from the well in the middle of the screen and place them, cannot remove buttons, cannot rearrange. The only thing I can do is to take a button for a walk, and drop it back where it was. Is is a known problem with a known fix? Firefox 31.3.0 esr on Windows 7 64 bit.

All Replies (7)

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Not a "known" problem.

Just a guess. - MR Tech Toolkit 6.0.4.9000 = try disabling that extension

Otherwise see this KB article. Troubleshoot extensions, themes and hardware acceleration issues to solve common Firefox problems

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the-edmeister said

Just a guess. - MR Tech Toolkit 6.0.4.9000 = try disabling that extension

Sorry, this did not help :(

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Does it help to right-click the icon and choose either Add to Toolbar or Add to Menu, and then try to move it to your preferred final destination from there?

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jscher2000 said

Does it help to right-click the icon and choose either Add to Toolbar or Add to Menu, and then try to move it to your preferred final destination from there?

Ugh, that was bad! Yes, Add to Toolbar worked, so unfortunately, but no, the new icon is also not movable. So I am stuck with yet another useless icon now.

Is there a config file (or an about:config variable) where the configuration is stored in any editable, text format? It would be weird to tinker with this, but I just want to move a few buttons to the bottom bar. I can probably do that once, although it's won't be so convenient as dragging and dropping buttons...

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What about right-clicking the useless button and then choosing Remove from Toolbar?


The controls on the main toolbar are stored in a preference in about:config, but it could be messy to edit...

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

(2) In the search box above the list, type or paste cust and pause while the list is filtered

(3) Double-click the browser.uiCustomization.state preference and copy the contents, then paste into Notepad or another text-editor of your choice.

The part after "nav-bar": lists the current buttons on the bar. I tested changing the order of two controls and pasting that back and then launching a new window, but nothing was different. I don't want to restart Firefox right now, so this test is indeterminate.


Perhaps it would be useful to "reset" the toolbar layout? In Customize mode, click the Restore Defaults button on the bottom line of the dialog. Does that let you operate the customize feature more normally?

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Thanks for your helping me. The Remove button command works (did not know there was this option!), but resetting toolbar layout did not solve the problem.

I'll try to edit the huge json expression you pointed me at, or even copy it (maybe with little modifications) from my desktop that does not have the problem.

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Between the last post and this one, I worked with a user in a different thread on editing that hard-to-read property. The trick there was to use the "Scratchpad" tool which has a "Pretty Print" feature to make the layout much more readable: https://support.mozilla.org/questions/1041446#answer-677749