This bug is annoying me when using Diarium in Windows.
My screen can display 30 worth of lines but my Diarium entry could be 100 lines long. I'd like to control which lines are displayed on the screen, for example line 20 - 50. For some reason, clicking your mouse anywhere or moving your cursor with the keyboard to the area between lines 1 - 30 will force the app to scroll the display to lines 1 - 30. There is no way to remain in the currently displayed lines. The program forces you to go back to line 1 - 30.
It's difficult when you're editing the area near line 30, say line 25 to 35, because the screen jumps around. Your cursor could be on the top part but after clicking, it will suddenly be on the bottom part because the screen scolled up. If you use a mouse, you will accidentally select a block of text because the app thinks you dragged your mouse pointer upwards but it's the automatic scrolling that did that.
I don't see any workaround. The only thing I can think of is to force myself to write short entries up to 30 lines max so there is no need to scroll.