Changing "Default Font Size" not working in Android phones

[JustDave1969]

Lately I find that I can't increase the font size when using my Android phone. I'm talking about the feature where you select the "A" tab along the top of a story. The drop-down beneath "Font Size" is disabled. I've tried this in both Chrome and Brave browsers. I can't believe I'm the only one having this problem. My eyes are old and I really can't read the stories easily on my phone now that this feature isn't working for me. Help!

 

[MissSophie]

I have the same issue on my iPhone, and on my laptop.

Both is Safari and Chrome. It's not working