View option 'hide package prefix' doesn't work

[FliegendeWurst]

Description

The view option "Hide Package Prefix" doesn't seem to actually hide package prefixes on the sequent.

Reproducible

always

Steps to reproduce

Load the file below.

package very.large.path.with.lots.of.members;

class LongMethodName {
    /*@ public normal_behaviour
      @ ensures \result == 100;
      @*/
    public int doIt(LongMethodName a, LongMethodName b, LongMethodName c) {
        return 100;
    }
}

Expected behaviour: package name in very.large.path.with.lots.of.members.LongMethodName::exactInstance(self) = TRUE is abbreviated
Actual behaviour: it is not

The same applies to lots of other places where full class names are displayed (e.g. casts).

Additional information

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• Commit: 2a56855