Hi Fedor,
Thanks for your feedback on this issue. This was a known shortcoimng in our WizardControl which was fixed lately. The fixes will be incorporated in the next release of Essential Suite (post v2.0.3.0 releases). You could use the "Add Page" verb in the designer as an alternate method to add WizardControlPages (as shown in the
screenshot attached). We appreciate your interest in Syncfusion products.
Regards,
Guru Patwal
Syncfusion, Inc.