Dialogs module

in web client mode:
when using a dialog on top of a table view form, the text fields (only these, not combos, etc...) of the form where the dialog has been called from is locked (read-only in fact) very often; you have to move to another form then come back to get theses fields back again to not read-only state. Setting them read-only=false upon return from the dialog does not help.
pb only intermittent, I'd like to know if other people came across a similar pb.