invalid matrix.to link recognized as valid but fails on mobile

[Bubu]

Describe the bug https://matrix.to/#cctg:bubu1.eu is recognized as a valid matrix.to link but it's invalid according to the spec. This leads to the link seeming to work on desktop/in the browser but then failing to work on mobile clients.

To Reproduce Steps to reproduce the behavior:

1. open https://matrix.to/#cctg:bubu1.eu
2. try to open it on mobile
3. ... it won't load

Expected behavior Don't display the #cctg:bubu1.eu room when visiting https://matrix.to/#cctg:bubu1.eu

Screenshots

Desktop (please complete the following information):

• OS: [e.g. iOS] Archlinux
• Browser [e.g. chrome, safari] FF 84
• Version [e.g. 22] matrix.to

Smartphone (please complete the following information):

• Android 8.1
• Browser [e.g. stock browser, safari] FF 83.1
• Element Android 1.0.11

[ludwigbald]

Same behavior for me, on Android 10 with Chrome. When opening the room in the browser, I get a preview. But when opening the link with Element Android, I get nothing.

There are two things that need to happen: matrix.to should recognize this link as wrong (#178 ) (maybe suggest the correct verison), and Element Android should implement an error message for invalid matrix.to links.

[Bubu]

implement an error message for invalid matrix.to links.

I does I think? --> I got a toast that said "Not a valid matrix.to link"

[ludwigbald]

I don't, though. I'll mention it over there too 👍

[bwindels]

I think there is a / missing, does https://matrix.to/#/#cctg:bubu1.eu work?

[Bubu]

Nice fix! :-) :tada:

Thanks @DanilaFe and @bwindels!