New-UDTreeView stopped displaying after upgrade from 5.3.3 to 5.4.3

[mikesimmons]

Product: PowerShell Universal
Version: 5.4.3

@adam
No change in the code, New-UDTreeView works well in 5.3.3 but doesn’t display in 5.4.3
No errors in the log.

v5.3.3

v5.4.3