After a quick investigation, it seems that graphic elements need to notify the accessibility plugin (qt-at-spi) whenever their position changes; I'm not sure how costly this is, and if there are ways to fix it. I'm getting in touch with Qt developers to know more about it.
OTOH, qt-at-spi seems to have changed a lot since June (and the version we are shipping now in Ubuntu is from June); unfortunately I couldn't test the new version, as it requires qt 4.8.
After a quick investigation, it seems that graphic elements need to notify the accessibility plugin (qt-at-spi) whenever their position changes; I'm not sure how costly this is, and if there are ways to fix it. I'm getting in touch with Qt developers to know more about it.
OTOH, qt-at-spi seems to have changed a lot since June (and the version we are shipping now in Ubuntu is from June); unfortunately I couldn't test the new version, as it requires qt 4.8.