Here's the situation:

• First, I start a RingCentral Meeting from my Windows 10 laptop.
• Customer Joins the Meeting from an iPhone 11 Pro Max using the Meetings app.
• Customer then attempts to share a PowerPoint presentation.

At that point, a bunch of problems start:

• The slide is not shown full screen to those viewing the share.
• The text becomes garbled. In other words, the file isn't rendering properly.
• Can't do anything to go from slide to slide. Just have to pinch/zoom, etc. to move the view around the screen.

Some other related notes:

• Tried this same thing with sharing a Google Slides slide deck and it works perfectly.
• Can jump through hoops to share the whole screen of the iPhone and then share that way but it only seems to share in presentation mode.
• Saving the PPTX file as a PDF seems to be a good workaround. But hard to ask customer to do that every time.

Any ideas on how to fix this?