LImit Order "Slippage" with Automated Trading API

I have an auto trading bot using a python API and Tradingview webhook. I have limit orders sent to Tradovate but I’ve noticed that the Limit orders sent from Tradingview experience “slippage” in Tradovate.

For example: a limit order will be sent to close an order at 4100, but Tradovate will set the limit order at 4100.50. The alert message in Tradingview clearly states the correct limit price

It is absolutely bizarre because I don’t even think this counts as true slippage (hence, using quotes around the word), since it’s just a limit order being sent.

Has anyone else experienced anything like this?