Time Selection TOOL in Adobe Audition does not record over ENTIRE time selection V.23 to CURRENT

In version 22 of Adobe Audition, when I made a TIME SELECTION through highlighting a section with the tool, I could then hit record and it would record over EVERYTHING in the highlighted time selection exactly from beginning to end of that selection.  I use this to manually clean areas of background sound.  In the versions after 22, when I highlight a TIME SELECTION and hit record, it does NOT record the entire selection exactly, but stops short about a fraction of a sec at the end.  Is this a setting or a bug?  Why is this now the new default?  Any help is greatly appreciated!