killap, if it is problematic to solve bug with quest logs i may suggest workaround (ah, so much temporary workarounds became permanent solution).
Instead of creating GUI that can scroll between quests (if there too much for one page), you can reduce amount of quests displayed. So it will be possible to show all the data in one page. For example if one does sequence of quests for one of criminal families, he will be interested only in current quest, and won't care much about previous quests done for this family.
Instead of creating GUI that can scroll between quests (if there too much for one page), you can reduce amount of quests displayed. So it will be possible to show all the data in one page. For example if one does sequence of quests for one of criminal families, he will be interested only in current quest, and won't care much about previous quests done for this family.