Hi,
In the text below, move point to the second half of the URL and
execute M-x browse-url-at-point.
```
```
It seems that the ":" following https is deleted, but the browser actually normalizes
the URL with the duplicate scheme "http://https://".
You can check this by executing M-: (browse-url-url-at-point).
Because thing-at-point-bounds-of-url-at-point function cannot correctly recognize
URL bounds in the text.
I considered changing the thing-at-point-bounds-of-url-at-point algorithm, but it would be a pain to change it without negatively impacting the current behavior.
Ideally, thing-at-point-bounds-of-url-at-point will be fixed eventually, but for now, the attached patch should easily fix the problem.