All of these issues have to be caused by your browser, as everything works normally for me. I just tested every single thing you've mentioned to be absolutely sure and yep, everything works as intended in the first tries.
Is this something that happens to you all the time or only when the site experiences problems?
That is something I actually plan to change among other things, but I'm waiting for the software update before doing any changes, because that update may ruin all the themes anyway, so there's little point in working on something that might break.
Unfortunately I don't know when the update will be performed. Currently we're running on a very outdated version (there are 3.5 years of updates awaiting to be installed) and I've mailed the system admin about this a longer while ago, but seems like he's busy, so I'm unable to give any estimate date.