When typing special texts in the sign, if the content is invalid (for example, -json with an invalid JSON text), the text field will be now displayed red.
Fixed the issue that the side texture of road blocks with straight line and two bevel angle lines will disappear on some occasions.
Fixed the issue that in the sign edit interface, the underline button changes the italic of text by mistake.
Fixed the issue that the X-rotation of text cannot be set correctly.
Adjusted the name of some contents.
Fixed the issue of typing JSON prefixed with "-json" in the sign and opening the edit interface will cause a space character missed and result in incorrect parsing.
