Memory leaks. I used this extension to refresh 1 webpage every 5 hours. The memory of the tab page increased to 600 MB after 7 days, and at the beginning, it was only about 150 MB, have to close the whole browser and restart. After I tried Automa with different kind of workflow 3 days later, I'm pretty sure it was this extension, but Automa is more complicated than this one.
