InvSee++_Give's command format was changed to accomodate the removal of NBT tags. The syntax of the /invgive and /endergive commands is now almost exactly like Vanilla's /give command. The exception is that entity selectors do not work with /ingvive and /endergive. Note that the new format is only required for Minecraft 1.20.5 and up. InvSee++ still uses the old format on Minecraft 1.20.4 and below.
InvSee++_Give now properly respects the max_stack_size component of item stacks - it is no longer possible to give stacks larger than the maximum stack size.