Repeating command block teleport only triggers once, then player falls (1.21.9)

In 1.21.9, repeating command blocks do not apply teleport commands every tick.

If you use:

tp @p ~ ~5 ~

in a repeating block set to “Always Active,” the player is teleported once, then immediately falls.

• Visually, the player can move normally.

• Server still treats the player as if they are at the teleport target.

• This causes desync and prevents proper block interaction.

Steps to Reproduce

1. Place a repeating command block.

2. Set it to “Always Active.”

3. Enter tp @p ~ ~5 ~.

4. Stand near it.

5. Player is teleported once, then falls, while server position remains stuck.

Expected Result
Teleport should apply every tick, keeping the player fixed at the target position.

Actual Result
Teleport runs only once, player falls, and server position is desynced.