Did you mean EiffelStudio ? What was the painpoint at the time ?

I've only played with it 20+ years ago (a colleague was one of the few practitioner) and I don't remember EiffelStudio being _that_ terrible (it has a class browser that was not that much more horrible than Eclipse at the time) - but again, I only dabbled.

Now, I have to agree that the way they market the IDE as the best thing since bread came baked is kinda cringy..