Potential tryton client bug: 'ProgressBar' objects has no attribute 'set editable'

I am facing an issue with tryton client 5.0.35, trytond_project 5.0.2 which I believe to be a bug in the tryton client as this works as expected in tryton client 5.0 and SAO 5.0.42

This occurs when I try to open Project>Projects>Tasks (and Projects) menuitem. Am I right to think that this is a bug in tryton client or am I missing something?

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You can reproduce this on the demo server as well demo5.0.tryton.org

Bugs must be reported on https://bugs.tryton.org/

Reported issue here: Issue 10452: Potential tryton client bug: ‘ProgressBar’ objects has no attribute ‘set editable’ - Tryton issue tracker