If it is not already obvious the first video is Minecraft bedrock edition (green) the second video that is continually clipped in and out is Minecraft Java edition (blue). Essentially, TLDR, parity. 

Since the addition of the ability to use firework rockets in crossbows there has been severe difference with them in quality between bedrock and Java. Okay, I can understand that it might be challenging to add off hand mechanics to mobile (Like if anyone would be able to figure that out it would be Mojang) but the inability to even use crossbows practically on bedrock should cause an outcry from all ends of the Minecraft community. Its bedrock implementation was half-assed. The bonus of the crossbow's versatility and situational practicality is quickly made redundant on bedrock, when you cannot swap between arrows fast enough, rockets do not work on contact with blocks or entities and the risk of dying to your own fireworks on bedrock is practically guaranteed if you use them. So, \[suggestion\] whoever was tasked with implementing this feature to bedrock should go back and fix it.

This is pathetic and I am thoroughly disappointed that rockets STILL behave this way when used in a crossbow on bedrock!