Interesting tool. I had it running perfectly, using your code and then - it just stopped working.

It was allowing multiple checks, and adding ALL the checked lines to the new DataFrame ‘df’ (even after displaying the new contents of ‘df’ after every check was added.)

However, then, it started only allowing one line to be checked which, after the data was loaded to ‘df’, it appears everything reloads. The previous check disappears and, if you click something else, the data in ‘df’ is replaced (not added to.)

Have you encountered this?