Hello, I managed to reproduce the issue. I believe this should be fixed by version 2.33.92-2 of at-spi2-core.
Some people have asked how to install these versions. You should be able to just add deb http://deb.debian.org/debian/ experimental main to your sources.list, run apt-get update, and then use apt-get install at-spi2-core/experimental gir1.2-atspi-2.0/experimental libatk-adaptor/experimental libatk-bridge2.0-0/experimental libatspi2.0-0/experimental python3-pyatspi/experimental libatk1.0-0/experimental to upgrade the whole at-spi stack to the experimental version. And use apt-get install at-spi2-core/unstable gir1.2-atspi-2.0/unstable libatk-adaptor/unstable libatk-bridge2.0-0/unstable libatspi2.0-0/unstable python3-pyatspi/unstable libatk1.0-0/unstable to downgrade back to unstable. Samuel
