Update: eBay is aware of the issue and working on resolving it soon. No action will be required.
Due to a new development with eBay that we are currently investigating, current and new listings are not showing their Descriptions on eBay.
The issue appears to be blocking parts of the description enclosed in the Mobile Description identifiers. By default, we enclose you entire description in these tags when submitting to eBay. This feature has been working correctly for a few years, but is now being handled differently on the eBay site. We’re working with them to resolve this issue without any changes being necessary, if possible.
As a workaround, in SixBit, click File > Options > Submitting Listings and uncheck the option to “Set the contents of the Description field as the default mobile description.”
New listings should go up with the correct HTML. Existing affected listings should be fixed by highlighting them in the Check Listings > Running mode and right-click Send Revisions to Site.
When I tried to fix the problem by unchecking the box and then using the “Send revisions to site” method, it didn’t work. I found that I actually had to go into each description wrapper and make a change. I do this by typing a space somewhere at the bottom of the wrapper. SixBit then offers to revise affected listings, which I think is working.