Using execute as @p offset ^ ^1 ^1 run summon minecraft:arrow will execute as if its being run off the command block. If its used with functions in the game's datapack, it won't do anything.
MC-123201
Using the ^ symbol in an execute command as an entity does not work propperly
Resolved
Invalid
0
The command is adding an offset based on the player's rotation to the command position, which is at the command block. To fix this, add
at @slike so: