For almost a year now I've been experiencing constant locking up of certain functions on Firefox for Android at the start of a browsing session. Sometimes this also happens mid-session with certain websites (mostly noticed with 9gag and Reddit). The failure takes the following form: * The current page usually fails to load. Or, it appears to load but is not scrollable. Simple pages may be fully scrollable but links or buttons will not work. * Tab cannot be changed either through the swipe gesture or the selection menu. * Settings menu can be opened and settings can be changed - this includes extensions management as well. * If the current tab is closed in the tab selection menu the purple selection box will disappear along with the tab and no new tab can be selected. * After 2-3 minutes all of the tab-related actions will suddenly update at once. Over the past few months I have discovered two ways to work around this incredibly frustrating persistent issue. * Open Extensions, disable or enable an extension, then exit the extension management * Open About:Memory and trigger a GC cleanup * Minimizing and reopening the app has no effect * Shutting down and launching the app has no effect * Restarting the device and launching the app has no effect * Performing a memory cleanup in Android settings has no effect. Leaving the device alone for 15-30 minutes seems to make it eligible to re-trigger. This problem is intermittent (not occurring every time) but consistent in its symptoms. I experience this issue at least once a day on two devices, but much more commonly on my Samsung A9 tablet with 8GB of memory compared to an Android smartphone with 4GB of memory. I suspect this may have something to do with site memory being held onto or being kept active which is blocking navigation until it gets cleaned up or is refreshed, but I have no idea.