In that case i dont think i can help further. Using your settings I can reproduce the issue exactly as you said, and the change fixes it. I see no reason for the fix to not return things to how it was before.
However if you changed your settings by unticking "split multi-value tags" and left the maximum rows at 99 then I can see how it would happen, but the issue in this case is text markup for multiple line display is not fully supported and wont be due to the complexity