Multi-line filters embedded within signals can't be edited directly (3.3-pre only)

[nblumhardt]

1. Start with a filter in the filter box:

Environment = "ProdTest" &&
   (@Level = "Error" || @Level = "Fatal")

1. Add it to a signal with >>
2. Click the filter within the signal and change || to or
3. Ok or

The changes are not saved; the in-place editing control is not multi-line capable.

[nblumhardt]

Turns out this was not multi-line related after all; the determination of whether the filter had been edited or not was driven off of the underlying 'normalised' representation, which doesn't change when || -> or. Fixed!