Created attachment 1475286 [details]
Bug reproduction

Description of problem:
When adding new LUN of Fiber channel to a VM, we see that the table of available luns is overlayed with scrolling bar, making it nearly impossible to select a lun.
See video attached.
No errors / warns in ui.log

Version-Release number of selected component (if applicable):
4.2.5.2-0.1.el7ev

How reproducible:
100%

Steps to Reproduce:
1. Make sure you have multiple available FB luns in your env
2. Click on some vm -> click on disks tab
3. Click "new" buttin
4. When dialog window pops, choose "direct lun"
5. when dialog window change it content to luns, choose "fiber channel" from storage type dropdown.

Actual results:
The table of available luns is overlayed with scrolling bar

Expected results:
The table content should be clear.

Additional info: