Hi
Can you please let us know how to reproduce this behavior? because i am not able to reproduce this on AEM 6.2.
For Classic UI, just open the assets by right clicking on it then pressing open button or double clicking assets OR in touch UI just view the properties of the assets.
I tried with admin user on 6.2 instance and it is working fine.
Please also check, if this is happening on all the assets or on a particular assets. And finally also validate if there is some error coming in AEM error.log.
~kautuk
Kautuk Sahni