I am guessing this is a known issue, unfortunately this bug is preventing me using Enscape on larger projects.
Hope you can finish your project now: 
Same issue
@MaximeD Are you using the latest version of Enscape? If yes, and you are experiencing this issue, would you please be so kind as to share a screenshot or video of the behavior? Thanks!
Hello
my screenshot would be the same as Solo’s Video.
I tried to use Micha’s trick but without result
and i’m using enscape 2.8.1
In that case it would be great if we could receive the project to let you know exactly what this issue is caused by. Would that be possible? 
You can upload it to wetransfer.com for example - if it’s confidential, you can also send it to me via a DM.