When looking at the icon of "Iron Bars" you can see other sides of the block making it look like there is floating pieces of iron bars.
MCPE-25802
Iron Bars item icon glitch
Resolved
Fixed
1
(Unassigned)
76465
Confirmed
Windows
10.0.15063.0
rendering
1.14.20 Hotfix, 1.2.0.25, 1.2.0.31
1.15.0.51 Beta, 1.16.0
Retrieved
Reopened due to accidentally resolved. This ticket will remain open until the fix is included in a standard release.