Improper resetting to previous value for % settings with buffer

[DatBogie]

When setting a % value to anything not equal to its current value, then trying to set it to an invalid value (without closing the modal), it resets back to the value stored in the buffer, not scaled up to a %.
Eg.:

1. 'Ghost Block Opacity' is 25%
2. Set 'Ghost Block Opacity' to 15%
3. Set 'Ghost Block Opacity' to abc
4. 'Ghost Block Opacity' gets set to .15

This works fine when resetting to the currently set value, however.
Eg.:

1. 'Ghost Block Opacity' is 25%
2. Set 'Ghost Block Opacity' to abc
3. 'Ghost Block Opacity' gets set to 25%