We are getting an issue in multiple admin user login, we have more then one admin users,
Some filter may be applied for different admin user. Make sure to reset the filter. Should be only user issue.
No filter has been used, both are fresh user
Did you try different browser or clearing the browser cache? Please also have browser debug mode open to see any JS error is occurring. Should not be an issue as it is working for other user.
You should also consider upgrading your Magento version. Upgraded version would have bunch of issue fixes which may resolve many of such issues.