Tested it with several widgets based KCMs, namely: qtquicksettings,
desktoppath and screenlocker. Those three have different situations
in term of layouts. Worst case scenario is desktoppath which leads
to the right hand side of the fields moving a bit to fit the indicators
but that's the price to pay for the feature I guess while keeping
things readable.
Here is a screenshot how of it looks on the qtquicksettings KCM:
{F8181526}
Note that the indicators are clickable and reset the field to default value.