解决方法
将
$\textcircled{1}$
1◯\textcircled{1}1◯
这个typora识别不了:

替换为
$\enclose{circle}{1}$
KaTeX parse error: Undefined control sequence: \enclose at position 1: \̲e̲n̲c̲l̲o̲s̲e̲{circle}{1}
这个优快云会报错:
KaTeX parse error: Undefined control sequence: \enclose at position 1: \̲e̲n̲c̲l̲o̲s̲e̲{circle}{1}