DTMF Tone on IOS 13 issue

There is a new feature on IOS 13 on my iPhone X (I went into an Apple store and tested in on several phone models all using IOS 13) that shortens the DTMF tone. So when you press a number in a automated system it has a short beep instead of a long tone. Every number on a keypad has a different DTMF tone that is how automated systems recognize that you have pressed 1 for english. I have an iPhone 8 with IOS 12 and IOS 12 still has the long DTMF signals, so this is an IOS 13 issue The short beep is not an issue when I am dialing out, but is an issue when I am trying to accept collect calls through a 3rd party, automated system when I press zero to accept the call it drops it because the DMTF tone is too short for the automated system to capture it. Anyone else having this issue.?