Attachment View Issue
I have a customer with the following issue which I am able to reproduce in-house as well.
There is a customized attachment detail view with both the parent and child applets as list applet.
When they click on New File button on child attachment list applet and then click Cancel button on the file pop up window, they cannot update any list column on the parent list applet.
The steps to replicate the issue are shown in the attached screenshot document.
The parent list applet is based on the class 'CSSFrameList' and the child applet is based on the class 'CSSFrameListFile'.