Thanks for responding, but I can't make any sense of your reply.
First, this issue doesn't happen with time based bars (see screenshot).
Second, it didn't happen in older releases - this is new behaviour.
Third, even if it was the expected behaviour, I would urge you to rethink. I've worked with literally dozens of graphics programmes over the years, and they **always** show all objects that are partially outside the window. Otherwise they would be unusable. I would argue that having objects that disappear when they partially scroll off the view panel is a major usability bug.
Fourth, no other trading platform I've tried has this issue.
Please have another think about this - the only sensible solution is to have objects remain in view when they are partially outside the window. Everyone one else can manage this so it must be relatively trivial.
Thanks