Hi Guys,
Nick kindly raised a ticket for this and we are working on a test fix for the applicable defect I've created , APAR PH19139.
In the meantime I wanted to share my workaround in case you want to turn these off as Nick suggested.
To turn off the warnings go to Preferences-> General-> Editors->Text Editors->Annotations ->Warnings and then you can de-select the Vertical ruler and Overview ruler options as you prefer.
For instance in my attached screenshot you will see I retained the Overview ruler so that I can still see the warnings on the right scrollbar but the left sided view is free to show my bookmarks.
Thanks and Regards
Mark
Mark Hall
HCL Technologies
RBD L2 Support
Mark Hall