I was just too lazy to make "Remember me" optional for the player so far.
Also, who the heck will install an RMXP game on a public computer?! -_-
I'll look into the bug with the chat bubbles. It's probably because of the text splitting in case of long messages.
EDIT: Alright, I checked on the bug and it's not a bug. It actually works as intended, I just didn't consider some cases.
The script splits the text in lines so they fit in 96 pixels width while the maximum line number in the chat bubble is 5. For former constant was hardcoded, I changed that for the next version and I changed it to 192 instead of 96. You can always change RMXOS::Data::ChatBubbleEntries and (in the next release) RMXOS::Data::ChatBubbleMaxWidth. I'll also change RMXOS::Data::ChatBubbleEntries to 8 instead of 5 by default. I might change the maximum chat entry limit to 150 or 128 or 100. I'll see. In any case there are constants in the RMXOS::Data module which are actually for advanced users since they aren't part of the default configuration. Feel free to change them, but remember to be careful when you update the script not to overwrite the edited part and add new constants from the script in that case.