Hi,
I have noticed some very strange behavior when switching different Zoom levels. I use an iPAD3 with iOS 6.1.3 and Comic Glass 5.13

Steps to reproduce the issue:
- disable "create a splitt page"
- limit the effective zoom mode to fit to image and Fit to Height (F2H)
- display a dual page Image in Portrait mode in the Zoom Level Fit to Image (F2I)


Case 1: (OK)
Switch from F2I to F2H and immediately switch back to F2I.
-> No issue. Picture is centered all the time

Case 2: (BUG)
Switch from F2I to F2H and wait. When the Text display of the Zoom Mode has disappeared, it takes about two more seconds and then picture suddenly jumps down 1/3 of the Display height and scrolls up again.
After this strange behavior, the Image can only be moved horizontal which is expected.
Before the jump happens you can move the picture in any direction. Even so far that half of the screen is empty.

If you now switch Back to F2I (Fit to Image) Zoom mode you will notice that the Picture shrinks to the upper edge of the display and after a few seconds it will move down to the center of the display.


Another, maybe similar bug:
- display any page in Fit to Image mode
- use pinch to zoom to any region of that picture.
- remember the displayed section of the picture
- wait a few seconds.
- the Image will jump in one direction and display a slightly different section of the Image.


Best Regards
John Critton

Thank you for your bug report.

Reload processing has a bug.
A next-generation page reading system is under development.
This problem is due to be corrected.


Thank you for your help.