Hi,
> This strange behavior is occurring on a brand new IBM Thinkpad with really nothing unusual added.
There's indeed a strange glitch according to Pegasus MDI when used with IBM Trackpoints:
Thinkpad Trackpoints can (and are by default) be configured to use for scrolling through the page.
To scroll that way one has to press the middle "UltraNav"-Key and simultaneously press the trackpoint into any direction.
Other than "normal" Windows behaviour this scrolling always triggers on the window beneath the current trackpoint position, even it's not the active window. Furthermore the Trackpoint pressure will be recalculated to control both the horizontal and the vertical scrollbar at the same time which means that one may scroll diagonally, too.
So far for the technical background, what I wanted to say is that it's not a "normal" scrolling technique which therefore cannot be compared with "normal" scrollwheel-mice.
The glitch now seems (only) to happen when this scrolling is invoked inside the window of PMail MDI on an empty window position where no child window is placed. Then the main area will be resized, the child windows will "scroll away" and scrollbars will appear even if they were not available before. It looks like that instead of any MDI child window (because at the scroll position there's none) the whole main area with all the other child windows will be scrolled (away).
Since I use Pegasus in full screen mode and have arranged a couple of used windows (mail folders) to fill all available space that Trackpoint-Phenomenon does not happen anymore, at least not unintentionally.
Finally, if it ever happens that folder windows became out of sight in PMail, there are two ways to repair:
1. The hard way: Kill the application task hard using the "Tasks" tab in the Task Manager to
prevent it from saving its configuration files with the
"wrongly-scrolled" window coordinates. Keep in mind that all other
configuration changes done in this session might be lost, too.
2. The soft way: If the wrong coordinates are already saved by any reason, you must select each open folder window in PMail itself under menu item "Windows" and first close it by pressing ESC before reopening later after all windows have been closed. After closing the last out-of-sight-window the (unusable) scrollbar will go away automatically.
To "repair" the global folder window you can also directly edit the file pmail.ini - Close PMail before! - and adapt the coordinates stored in "[Pegasus Mail for Windows] / Folder manager window rectangle" to some small values (left upper corner). But always save a backup of at least this file or at best the whole mailbox directory before editing this file, since mistakes in that file might make things worse. Anyway I do not recommend to manipulate this file manually if you can not oversee the consequences...