MKV height & width in Win 10 1803

I noticed the height and width of MKV video file are missing in windows explorer or in the details tab of the file properties.

I'm using latest version of the basic k-lite codec pack, my OS Win10 1803, build 17134.81.

Any suggestion?

You should run the K-Lite installer again after installing big Windows 10 updates, as those reset a lot of stuff, including thumbnails and file property handling.