On mobile view (and on other small screens) the system messages are entirely or partially covered up by the blue 'Start Online Chat' bar.
Solution would be to change the CSS stack order (z-index) to display those messages over the top of other elements.

....Same problem but with the user bar (on mobile screens, when browsing items).
User bar is almost completely covered up by the chat bar. It stays that when scrolling up/down.

@piter
Try to increase z-index for that block.

Changing .flash-box z-index to 900 makes all messages pop-up over other elements.


But how about second problem where the chat bar display over the user bar on item page It cant be done via z-index :-).

@piter
It can as well, just maybe on parent element of message block (when on same level).
Alternatively you can lower z-index for chat bar/box