How leading software products are losing the customers and don't know about it

All the software product companies continuously try to enhance the usability of their products. People are usually looking to find a new UX issue or run some more usability testing.
But the truth is that when searching for usability issues we need to consider our software issues first. No usability testing UX will help us if we have software errors.
The fundamental part of any usability testing is QA.
In this video, I’m showing why QA can always be improved as even industry-leading software products have bugs that are leading them to lose clients.
Check out the industry-leading software bugs examples
00:00 - Intro
00:36 - Upwork tax form and support form issues
02:06 - Figma support form bug
03:44 - MoonMail registration issue
05:16 - Summary