We had today a similar issue like mentioned here:
https://community.playfab.com/questions/58243/build-stuck-on-initialized.html?childToView=60371#answer-60371 (reopening in a new thread since the issue it has been closed)
The build was stucked in initialized on North Europe. I add a region (US East) and the build started redoplying to US East and finally went to deployed with the same build in US East.
I'm wondering what is causing the behavior since I have no logs. Our unpacked server is currently close to 5GB. Could it be that we reached the build size limit (Game server build size: 5,000,000,000 bytes) and therefore might not be able to deploy?