Expect \overparen {BC} is translated to <mover><mrow><mi>B</mi><mi>C</mi></mrow><mo>⏜</mo></mover>，
but actually I get is <mrow><mi>⏜</mi><mrow><mi>B</mi><mi>C</mi></mrow></mrow>.
This might be related or similar to the solved #103 #112 .
Expect
\overparen {BC}is translated to<mover><mrow><mi>B</mi><mi>C</mi></mrow><mo>⏜</mo></mover>， but actually I get is<mrow><mi>⏜</mi><mrow><mi>B</mi><mi>C</mi></mrow></mrow>.This might be related or similar to the solved #103 #112 .