I have encountered the same problem, when trying to replace a background video in the designer.
After choosing the file of the video, the whole screen turns grey, after I have to reload the page.
I am attaching a screen from the console from the error.
Thanks for posting here. It sounds like this background video issue may be unrelated to this this thread. The original issue pertains specifically to a Designer crash when using the context menu (right clicking).
This sounds like it’s related specifically to uploading a new background video file. I’ve broken this off into a new thread.
What sites are you seeing this issue occur in – only this project or multiple projects? When did it start occurring? Can you send me the site Read-Only links please?
I have tried all of the above and the problem persists. My browser version is: Chrome 67 on macOS.
Right now this is the only project that I am working on with a background video. That said, I have tried to copy the page of my project and pasted it in a new project. There I tried uploading (by that I meant replacing a background video), and it didn’t crash.
I did some testing on this end and was able to replace the background video without issue. That said, it looks like you have several background videos and it may be a specific bg video node, or the new file itself.
Sorry, I didn’t mention it before, I was trying to replace the first video in the slider, which in total is composed of 3 videos.
As per your suggestion, I tried uploading a different file, and I was able to replace it without issues. So, I can confirm that now it works, no crushing!