Why are such artifacts on the buttons possible?

Question

Android

The user on the Samsung Galaxy S2 device has such artifacts on the buttons, all the rest do not have such bugs, what could theoretically be connected with?

Answer 1

See indents from top to bottom

Answer 2

Well, firstly, lay out the layout, maybe you have a “childish” jamb there with setting sizes / indents in the wrong units, and therefore everything moves out on the S2 screen parameters.
Secondly, Android users themselves can adjust the font sizes, maybe the user has set a large font and the inscription does not fit now? Does the button have a height of wrap_content?
Thirdly, maybe something else)

Answer 3

) it's line-height to blame