I think you're only telling me things that sound like they've been done to prevent spam or addition of spammy content.
I get that a file in the trunk is not the wiki. There is a real wiki, with web browser controls, and it's not what they're using. But it says wiki, and if you're trying to edit it but not a Fossil developer, you're probably doing it wrong... you should have your own Fossil repo/server.
I'll admit I did not try to submit an issue, and I'm not using Fossil right now. I just use Git. My users don't want the timeline on their homepage. shrug
And, actually, I am a Fossil developer. Or at least a whiner with a dev account. Believe me, I know what I'm whining about.
Finally, Fossil is not for homepages. I guess your devs like having a timeline on their Github...
http://fossil-scm.org/index.html/doc/trunk/www/index.wiki
For the issue tracker: just try to report an issue (without logging in with a dev account). It has been very long time now that Fossil is accepting issue reports only through email. It's quite an ironic thing to do for a project that's providing an issue tracker, isn't it?