Hadn't heard much about that, actually if it is a problem we could probably do a combined approach where we'd use Screen Reader to find the boundaries of WeChat chat bubbles (even if WeChat is blocking us from pulling text from them) and then based on that configure OCR in an optimized way to accurately extract text from them (set the correct color thresholds to perfectly extract black text from WeChat's standard green background in green bubbles, e.g.).