The “out of memory” issue is solved in version 6.3.3.
I test version 6.3.3 with Chrome on Windows 10 and it works well. Memory usage doesn’t increase with the test loop.
But, I test version 7.0.11 (Desktop mode active) with Chrome on Ubuntu 20.04, the old issue happens again. The memory usage increases with the test loop.
BTW, I found that the memory would be released if I click the “setup” button. Of course, it is not a solution.
It is a lovely software. Hope this annoying issue could be solved.