Fixed the issue that the tooltip of 'rearrange' button and 'clear' button in the sign edit screen is incorrect.
Fixed the issue that text cannot be correctly selected in the sign edit screen.
When holding invisible signs, the outlines of placed ordinary invisible signs will be drawn in cyan, while those of glowing invisible signs are still yellow.
Removed the usage of deprecated -texture_beta.
Fixed potential NullPointerException on editing standing signs.
Fixed the issue that the Tab key cannot correctly select buttons in the sign edit screen.
