Mobile/iOS: Most display pref widgets kick back to text size on activation

[su]

This happens for all except the emphasis one on the end.

For the line spacing widget, this breaks the slider as slider, although tapping directly on the position you want does work (but still kicks you to text size).

[caseyg]

I noticed this! Thanks for logging it here.

I'm not yet sure what the cause is, or how to solve, but I will inspect it next time I sit down and think on it.