Bug 106915

Description:
Scrolling vertically should not skip rows. Sometimes, I eyeball for something and scroll through a document. I did this by using PageUp and PageDown. Calc sometimes overlaps rows between screensful and sometimes skips a row or more. Overlapping is not as inconvenient but the possibility of skipping rows means I have to read a row number before and after every keypress. I suppose I could automate the process, but then I'd have to write the automation function, and that would take time, when I should just keyboard my way through. Some other programs offer more consistent treatment when scrolling similarly. In Calc, I did not check by scrolling horizontally for columns.

Steps to Reproduce:
1. In Calc, create a spreadsheet with several screensful of data.
2. Scroll vertically one screenful at a time, but eyeball the row number before and after each click to see if you're skipping any rows.

Actual Results:  
Sometimes skips rows (so we have to scroll back to see what was out of sight) and sometimes overlaps rows.

Expected Results:
No rows being skipped in view.


Reproducible: Always

User Profile Reset: No -- hadn't set it in the first place, installation being new and by default.

Additional Info:
Consistency helps. Best is either a one-row overlap or exactly no overlap and no skip.


User-Agent: Mozilla/5.0 (X11; Fedora; Linux x86_64; rv:52.0) Gecko/20100101 Firefox/52.0