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new tabs start to load then go down

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Hello, for the last week, I can load 1st page, but randomly when I try to load 3nd or 3rd tab, tab comes up goes to page, then tab goes off the browser .It happens sporadically . Quick note, I use Proton VPN , but but tabs wont load in both Proton VPN and standard internet link . Is it a recent update to pc or firefox browser ? It just started happening recently . I use a HP M6 Pavilion, Windows 10 64 bit .

Hello, for the last week, I can load 1st page, but randomly when I try to load 3nd or 3rd tab, tab comes up goes to page, then tab goes off the browser .It happens sporadically . Quick note, I use Proton VPN , but but tabs wont load in both Proton VPN and standard internet link . Is it a recent update to pc or firefox browser ? It just started happening recently . I use a HP M6 Pavilion, Windows 10 64 bit .

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My guess, based on the number of add-ons you have installed on your browser, is that an add-on is accidentally closing new tabs.

The easiest way to see if that's the problem is to run Firefox in Safe Mode for a while to see if the issue happens. See Diagnose Firefox issues using Troubleshoot Mode.

Hope this helps.