Can someone confirm this bug ?
1. create single sphere and assign aiStandardSurface shader, create Skydome Light
2. drag&drop some texture in Hypershade and plug it to Base Color of aiStandardSurface
3. open Arnold RenderView, enable Isolate Selected mode and run it
4. go back to Hypershade, click on place2dTexture node of texture and change Repeat UV default value (1,1) to something else
5. crash
Tested on Windows 7 x64, Maya 2019, Arnold 3.2.0.1