_ (Underscore/underline) of checkbox in WPF is missing

In today's project, the content of check box content is missing '_' because the contentpresenter of WPF uses '_' as the Escape Character of the acceleration key by default.
For example, if the content of the checkbox is "_ isenable", the actual result is:
It is displayed as "isenable". When you press "I", the click event is triggered to quickly select or deselect the selected event.

To display '_', set the recognizesaccesskey of contentpresenter in the control to "false", for example:
<Contentpresenter encoding = "{templatebinding encoding}" margin = "{templatebinding padding}" encoding = "false" encoding = "{templatebinding snapstodevicepixels}" encoding = "{templatebinding encoding }"/>

_ (Underscore/underline) of checkbox in WPF is missing