Alarm worksheet bug on IWS 7.1 sp1

Dear Indusoft dev team,

after updating to IWS 7.1 SP1 we are facing a very strange issue on the the alarm configuration sheet under the advanced pop up dialog window .

If we place a tag or a constant value on any available field and we reopen the dialog window
the parameter disappears. In case of a tag, the tag it appears to be used on this worksheet even if it is not displayed any more.

Any fix/workaround on this issue?