The problem still occurs in version 3.24, using geodesicBuffer this time (see also attached image). I am not using third party modules. The fix appears to be the same:
Look for (note that this was wrapped over two lines in my text editor):
if(this.Pc||1E4<u.Ds&&1<u.Pj.length)
Replace with:
if((u)&&(this.Pc||1E4<u.Ds&&1<u.Pj.length))
Windows 10, IE 11
Parameters for geodesicBuffer:
geometry (string representation; an actual Polygon instance was passed):
"{"rings":[[[-17579866.91,2431821.3332],[-17579898.065899998,2431640.692400001],[-17579953.4001,2431648.533399999],[-17579955.833,2431635.3517999984],[-17580002.9127,2431644.161800001],[-17580004.8609,2431633.4224999994],[-17580024.7616,2431635.3834000006],[-17580029.1474,2431599.7437999993],[-17580055.357,2431604.640299998],[-17580035.3918,2431736.4585999995],[-17580027.1143,2431788.6972999982],[-17580007.9076,2431902.6317999996],[-17579983.056,2431899.3718999997],[-17579989.3852,2431863.747299999],[-17579983.7298,2431862.969900001],[-17579984.853,2431854.5929999985],[-17579920.7811,2431844.3082999997],[-17579922.2447,2431830.1493999995],[-17579866.91,2431821.3332]]],"spatialReference":{"wkid":102100,"latestWkid":3857}}"
distance: 500
unit: 9002
unionResults: false