Bug with random dot stimulus

OS: Windows and Mac
PsychoPy version: 2022.1.1
Standard Standalone? (y/n) Yes:

In the latest version of PsychoPy, the random dot stimulus does not work. i.e. the dots appear but they do not move.

Steps to reproduce: run the dots.py demo in the Coder view.

The random dot stimulus did work in version 2021.1.2

Work-around: tell PsychoPy to use the last source code version in which the dot stimulus worked.

e.g. In Builder, in the “Experiment settings” dialog, select 2021.1.4 as the option for the “Use PsychoPy version” setting.

UPDATE: this has been resolved in the development repository and is no longer an issue, as of the bug release 2022.1.2: