Between 24w33a and 24w35a this worked correctly (you would keep going in the direction you were going when you entered the end portal)
But since 24w36a you instead go in some random direction

Reproduction Steps:

• Open world testy test.zip
• Run command /execute in minecraft:overworld run tp @s -514 43 -2494 ~ ~
• Ride a minecart towards the end portal
• Observe result 1
• Run command { {/execute in minecraft:overworld run tp @s -557 -35 -2507 ~ ~}
• Ride a minecart towards the end portal
• Observe result 2
• Repeat the steps in version 24w35a
• Observe result 3

Observed Results
24w36a+
1. You arrive in the end moving in the north direction
2. You arrive in the end moving in the south direction
24w35a
3. (correct) In both cases you arrive in the end moving in the direction you were going (east)

Expected Results

• You would always observe what you did in 24w35a (you keep moving in the same direction)