Hi Jun
About the chat features: you may be looking for one of the suggestsions I posted in this topic:
https://atulos.com/forum/index.php?topic=238.0.
I have a very similar issue with the question mark (?). At my end, it keeps clearing whatever I have already typed into the chat line. So far, I believed it was just on my end on my windows computer as it worked fine on an old version on Ubunut and everyone else was putting their question marks. May I ask about your keyboard and the language settings of your computer?
(You'll most likely find it under Start->Settings->Time/Language -> Region/Language or something similar according to your windows version). Maybe, it needs a little change in the character encoding and can be implemented in the next update?
Workaround: You can use Alt + 63 (Hold down Alt and type 63 on your num-pad) to get a question mark.
About the missing mouse-over tags: They don't really matter: Each slot apart from weapon/shield may only hold one specific item (e.g. there is just one type of potion that goes in the 4 slots to the right of the shield). Local items (keys in dungens, mushrooms in forest) make an exception going both into the 4 slots right to your weapon, but they can't be transported to another area. So there is not that much need to get tags written to every individual item in every individual slot.
Last about the HP bar: As far as I know, the internal number used for your health turns out to be ugly-looking if displayed. So if it would be displayed just as the XP bar, it would probably confuse players more than it would help. However, it might be a splendid Idea to display the percentage remaining of your health.
Thank you very much for the time to post your suggestions.
Kindest Regards
Aerith