Sync more than 12 slash commands

[Myr-13]

I have problem with syncing more than 12 slash commands in one guild.
I have bot with 15 different slash commands in cogs, but when I try to sync it it sync only 12 commands, any snippet for syncing more than this limit or this a bug?

Syncing code:

@commands.command()
async def sync(self, ctx: commands.Context) -> None:
	if not ctx.author.guild_permissions.administrator:
		await ctx.send("You are not admin nobo")
		return

	fmt = await self.bot.tree.sync(guild=ctx.guild)
	await ctx.send(
		f"Synced {len(fmt)} commands to the current guild.",
	)

I creating commands using @app_commands.command(name="", description="")
I using discord.py v2.2.2 and python v3.8