Player cannot Activate the Nether Portal on the First Attempt in the New Generated Creative World

Summary

After the 1.16.100 update, I have issues with the Nether Portals. When I tried to activate the Nether Portal on the first attempt in the new generated creative world, I cannot activate the Nether Portal. But when I tried it the second time, the Nether Portal activates.

Steps to Reproduce:

1. Create a new world in creative mode.
2. Get some obsidians and a flint and steel.
3. Build the Nether Portal.
4. Try to activate the Nether Portal.

 Player cannot activate the Nether Portal on the first attempt.