Post any defects you find in the released or beta versions of the ImageMagick software here. Include the ImageMagick version, OS, and any command-line required to reproduce the problem. Got a patch for a bug? Post it here.
I realize that...East and West gravity have changed and do not center vertically compared to Center gravity. There is an odd offset. Previously in <6.9 this problem did not occur.
I can verify that center text is slightly lower in y than east or west text. I am using 6.9.4-2 Q16 (non-hdri) Mac OSX. Same with IM 7.0.1.4 Q16 (non-hdri). Below I specify the font and pointsize rather than take the system default.