Something wrong when setting a textLayer's lineHeight - Sketch Developers

Something wrong when setting a textLayer's lineHeight

MerlinLmq

hi, @mathieudutour @kevgski . I find after set a textLayer's lineHeight(same as default), the return value of function "glyphBounds()" will be changed( some typefaces will be changed, and some will not be changed). I hope it will be not changed, can you tell me why? more details shown in the following figure.

MerlinLmq

the problem typeface is at: https://app.box.com/s/mczfq8ybnlbwaxyq8i0p8cdjb1felipl