This is related with https://en.numista.com/forum/topic127218.html
I have this problem with other characters. In some cases, the punctuation sign after of url is added to the link, making it invalid.
I write here some cases…
If I write in a text editor, copy and paste here, works:
text N#19167. text
text N#19167, text
text N#19167: text
text N#19167? text
text N#19167! text
text N#19167) text
text N#19167). text
text N#19167), text
text N#19167): text
text N#19167)? text
text N#19167)! text
If write here and I type a space after type the punctuation sign, the url is converted in a link (if I type a point “.” works, but if I type other punctuation sign, it is added to link):
text N#19167. text
text N#19167, text
text https://en.numista.com/catalogue/pieces19167.html: text
text https://en.numista.com/catalogue/pieces19167.html? text
text https://en.numista.com/catalogue/pieces19167.html! text
text N#19167) text
text N#19167). text
text N#19167), text
text https://en.numista.com/catalogue/pieces19167.html): text
text https://en.numista.com/catalogue/pieces19167.html)? text
text https://en.numista.com/catalogue/pieces19167.html)! text