Custom CSS Not Applied When OmniScript is Dynamically Loaded in LWC

When an OmniScript is dynamically loaded within an LWC, custom CSS which is added in the Omniscript, does not get applied as expected. However, if the OmniScript is added normally within the LWC, the styling works correctly.

Meaning of Dynamically Rendering the OmniScript:

Dynamically rendering the OmniScript refers to importing the OmniScript at runtime on perform of any action on LWC, after the custom LWC has fully loaded. 

Resources for Dynamically rendering Components in LWC :- Link