Been using onetab since like 2013, this is for the Android version. Is it a problem writing to the onetab cache file? Whatever it is, the problem is clicking bring all tabs to onetab just deletes your tabs you have. And since Firefox Android's history is ridiculously small for recent tabs they are gone. A lot of research and pages you wanted to go back to gone. 15 saves jntk one tab the first time. After that 4 and a dozen lost. And after that no tabs ever were brought into onetab. What happened to Firefox Android? A lot of the best extensions don't work.much lie all the highly rated video downloader extensions now. They don't work. Get your shit together Mozilla.