Describe the bug
When dragresize is enabled and conversejs is working in overlayed mode there are stuttering effects while mouse dragging over the page with iframes. Before the 6.x.x version of conversejs there was no such problem.

To Reproduce
Steps to reproduce the behavior:

1. Simple conversejs initialization with embedded mode on the page with iframe(s)
2. Try to resize configbox, muc-box or chat-box and see stutters when mouse is under iframe and goes beyond the limits of conversejs div.

Expected behavior
No stutters

Video
Recording_1677507172161.webm

Environment (please complete the following information):

• Desktop
• Chrome and Firefox browsers of the current last version
• Converse.js version > 5.x.x