I have a problem in IE with the same described here :
I looked in the developer tools. It seems that the first time when the page is loading the margin of the content is
Not the margin of the sidenav. It is interesting if you toogle the sidenav then it is fixed. It is very strange since the class of opened for mat-sidenav is there.
Does anyone know how to fix this? I tried to add a width for sidenav but it did not solved it: