Android Firefox: clicking on the post link icon

When using the mobile view, click on the details of a post, then the link icon, I got this

(I cannot copy the direct URL of a post)

When long press a embedded link, I got this:

(Which I can copy the link)

If I use the Desktop view of Android Firefox, when click on the post link icon, I can copy the direct link.

Is there any way in ASK or Android Firefox or Android OS so that I can copy the direct URL of a post?

I think that it is due to FF on Android. The link icon is actually a share icon. And Firefox shows the available sharing options on Android. Once upon a time there was also Copy to clipboard option, but as far as I can see, it has gone with some update.

Maybe this?