normally, this happens when you are trying to show too many values on your table or when computing the table takes too much memory, depending on the RAM that is available on your computer / server.
This is not intuitively linked to the changes you are making to the table. If you keep it this way, the risk is that the message will appear "randomly" when the load is too high, looking like it's a bug.
Reloading, re-opening the app and stuff like this will just be a temporary fix but will not solve the root of the problem.
You have to try to reduce the amount of data you want to include in the table (think about the user experience) or use a machine with more RAM if you cannot shrink it further.