Roscoe Dash took to twitter to vent about not getting credit for some hits. He stated:

Can’t do favors for niggas bcuz no matter how humble and generous u r to ppl niggas will take everything u have … Even niggas u look up to. The most talented ppl get the least credit for everything and the crazy part is they put in the MOST work… Same shyt with @wale lotus flower bomb I wrote that for him b4 he even signed to Ross & it went #1… but nobody would kno that cuz I’m not in the credits. I’m only speaking on this publicly bcuz there are so many ppl who wanna be apart of the industry but dnt Kno half of the shit that goes on. After getting off the phone with @wale I feel like I need to clarify I WROTE THE HOOK for “lotus flowerbomb” not his verses. & as far as @KanyeWest “To The World” if u listen close my adlibs are STILL in the song.
Roscoe Dash

There are plenty stories of things like this going on in the industry, but only a few publicly vent about it. Roscoe Dash should of took this up with Wale to make sure he got his credit. Meek Mill replied on twitter, you can see it below.