Tab order in QDialog always moving to QTableWidget last

I have a QDialog that contains a bunch of fields, buttons and a custom widget that inherits QTableWidget somewhere in the middle. I have the tab order set up the way I want it and it works fine, but only the first time though. After focusing on the last widget in the tab order and pressing tab again the focus goes back to the custom QTableWidget! It doesn't go back to number 1 in the tab order!

I have tried changing the tab order to something else and开发者_JAVA技巧 I still get the same result. After tabbing out of the last widget the focus goes to the table (which is #26 out of 38 in the tab order) instead of the first field.

I have tried setting "NoFocus" on the main QDialog and the custom table widget itself. I am also not using setTabOrder() anywhere on the QDialog or on my table widget.

What could be going on?