While there isn't a commercially grown glyphosate tolerant wheat; there is a significant pathway for glyphosate into the wheat you eat through the process of desiccation[1]. It is common practice to kill the plant with an herbicide shortly before harvest, which helps to maximize yield.
Personally, I suspect that many people who present as wheat/gluten sensitive may in fact be reacting to the herbicides present in the wheat.
[1] https://en.wikipedia.org/wiki/Crop_desiccation