Black lines appear on the custom block models after converting entities to custom blocks.

Partner Rank: 1

Verification builds:
1.16.200 NOV18 Holiday RenderDragon R16 Update 2
1.16.100.04_rc4 R16 Update 1 Release Candidate 4

Summary:
We've been converting a few of our entities into custom blocks to help with performance. Whilst doing so it appears the geo is being rendered slightly smaller causing visual bugs (the black lines).

Impact:
Black lines appear on custom block models after converting entities to custom blocks.

Repro Steps:
Get the 'Terra Swoop Force' map
Change your Game Mode to Creative
Give yourself the custom block noxcrew:tsf.vending_machine with the following command /give @a noxcrew:tsf.vending_machine
Place the custom block down in the world.
Summon the entity version of this model with the following command
/summon noxcrew:tsf.vending_machine

Observed Results:
Black lines appear on custom block models after converting from entity models

Expected Results:
No black lines appear on custom block models after converting from entity models

Screenshots/Videos attached: Yes (Attached in Slack)

Regression Build:
Unknown