For issues you find with the Switch and Console releases, please follow this link and give as much detail as possible. This is the speediest way to get info to Pipeworks and get a hotfix in the works.
1.4 will bring many changes to the PC version. We strongly advise making plans to back up your worlds and players prior to updating your game. More details here.
Begin your search for Journey's End information here and here. Please report bugs and issues for Journey's End here.
For issues you find with the Mobile 1.3 update, please follow this link and give as much detail as possible. This is the speediest way to get info to DR Studios to look at your issue. Also, some troubleshooting hints here.
So after having finally completed my playthrough of 1.4 by crafting the Zenith I have come to the conclusion that 1.4 is actually quite underwhelming in my opinion since it felt more like if you made mods that tweaked vanilla a part of the base game rather than an actual update due to the pointless amount of buffs and nerfs. Also not to mention Master Mode and blahblah.