Ok... I reproduced it. It happens when the class uses a trait (via Metaclass>>uses:instanceVariableNames:) but no problem when no trait is used. I'll see what to do.

Martin

On Tue, May 9, 2017 at 4:22 PM, Stephane Ducasse <stepharo.self@gmail.com> wrote:
Aliaksei
thanks for the report. Now if you do not say in the title that this looks like an Epicea problem
then Martin may not see it.��
Can you open a bug entry?
Stef

On Mon, May 8, 2017 at 10:57 PM, Aliaksei Syrel <alex.syrel@gmail.com> wrote:
Hi,

Screenshot tells everything :)��
I was trying to add "asdasd" inst var

Inline images 1

Cheers,
Alex