There seems to have been two changes, compared to 2.2.x, regarding the LyX display of the integral sign and its limits. In 2_2016-12-04.png, the upper limit is now vertically aligned with the bottom limit. In current 2.3.x, the limits are moved to the left to the point where the upper limit is adjacent to integral.
I find the appearance of 2.2.x to be closest to the PDF output. I can do a bisect (for one or both of the above changes) if that would help. I didn't do that yet since I don't know if this change was intended. Scott
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