I’m never clicking post twice. It only happens from my new cell phone not from my laptop. And every single time it happens, the progress bar (on my phone’s browser) pauses for a few seconds then completes quickly. Then, wham, double post. It appears to be a defect with the Android itself. It’s also sending two requests for some page views. I just can’t figure out why.
You are much more advanced than I am, I don’t have an Android or want to post from a cell phone. I am doing good just to be doing this. I should never give computer advice. :D
But then again, I am seeing an increase in the number of double posts by other freepers. So ...