There is a known issue where changing case to sentence case does not work if the selected text contains a mixture of words in uppercase and other cases.
The workaround is to first change the case to lowercase, and then to sentence case.
There is a known issue where changing case to sentence case does not work if the selected text contains a mixture of words in uppercase and other cases.
The workaround is to first change the case to lowercase, and then to sentence case.