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Closing tabs often causes Firefox to freeze on the new version

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  • Last reply by piguy413

Recently, my Samsung A23 5G started freezing when closing tabs. I only started having this issue since Firefox updated to a new version with a new UI. I am currently on 147.0.3 on both devices. I load one tab, close it, load another, and then it usually freezes on the next close. Clearing the cache often allows me to go a couple more tabs without freezing, while simply closing Firefox still usually has the limit of two tabs before freezing. I usually just press "close app" when the "Firefox isn't responding" system box comes up. I've restarted my Samsung phone but the issue persists. My new Moto G Stylus 2025 doesn't freeze, but Firefox still feels noticably slower, especially when closing tabs.

I've uploaded three screenshots. The first one shows how it freezes while I close a tab, while the second shows how Android's "not responding" message comes up. The third one shows the current version on both of my phones.

Recently, my Samsung A23 5G started freezing when closing tabs. I only started having this issue since Firefox updated to a new version with a new UI. I am currently on 147.0.3 on both devices. I load one tab, close it, load another, and then it usually freezes on the next close. Clearing the cache often allows me to go a couple more tabs without freezing, while simply closing Firefox still usually has the limit of two tabs before freezing. I usually just press "close app" when the "Firefox isn't responding" system box comes up. I've restarted my Samsung phone but the issue persists. My new Moto G Stylus 2025 doesn't freeze, but Firefox still feels noticably slower, especially when closing tabs. I've uploaded three screenshots. The first one shows how it freezes while I close a tab, while the second shows how Android's "not responding" message comes up. The third one shows the current version on both of my phones.
Attached screenshots

Chosen solution

Edit from OP:

The specific change that is causing the freezing and slowness is "Tab Manager enhancements". Going into the "Secret Settings" and turning it off fixed the issue.

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Chosen Solution

Edit from OP:

The specific change that is causing the freezing and slowness is "Tab Manager enhancements". Going into the "Secret Settings" and turning it off fixed the issue.

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