The contents of the list of MIME entities (on the right hand side of the message view window) are not visible. They do seem to receive tap events and change the message view accordingly though (several tries may be required to hit just the right spot).
I also think the list is not scrollable (using the arrow buttons at the bottom which appear greyed out), but it's hard to tell without seeing it.
This is best demonstrated on a message with several entities such as a MIME format mailing list digest, but any message should have at least two MIME entities listed.
If one taps at *just* the right spot near the thin line at the top of the list, another MIME entity list appears as a pane above the message view, and that one works fine (but a bit suboptimal as it uses too much screen real estate).
The "desktop" version works fine (tested on Ubuntu 8.04).
This one is playing with my mind. I'm investigating it.
Changes related to this bug have been committed.
Please check latest CVS and update the bug accordingly.
You can also get the patch from:
2008-10-04 [colin] 3.6.0cvs6
Fix bug 1742, 'Attachment list contents not
Fixed by the 3.6.0-3 upload which should be available in the next hours.
Works fine now, thanks!