Which are the steps to reproduce this bug?

The screen show you provide shows verson 17967.
Probably the bug is still in the current Squeak5.2alpha  latest
update: #18146 version

--Hannes

On 7/18/18, Edgar De Cleene <edgardec2005 at gmail.com> wrote:
> FileServices  unregisterFileReader: CornerGripMorph  solve this, but why is
> again in trunk ?
>
>