今に始まったことじゃない
Meanings
1
nothing new; same as always; not the first time
Fixed expression used to dismiss something as unsurprising or typical, often with a resigned or matter-of-fact tone. The negative form じゃない is colloquial; the more formal variant is 今に始まったことではない.
See also: 今に始まったことではない (いまにはじまったことではない)
It's nothing new for him to be late.
It's not the first time this shop has been crowded, you know.