I have upgraded jenkins to 2.319.1 and started seeing this issue. Our Jenkins is accessed via Netscaler endpoint.

Image 2 : When accessed via ip

What I tried so far.

1. I have checked the logs. No info in logs. Hence I suspect this may be Netscaler's doing.
2. I tried using Nginx for reverse proxy and it works fine.
3. I tried simple theme to put custom images and icons. It wont work.

Are there any plugins which can provide icons.I have tried dark theme and simple theme plugins, but to no avail.

Update : I narrowed down the last working version

LTS :

CodePudding user response：

Finally we found the solution. We had a http to https redirection policy in Netscaler. We dont know why that was blocking *.svg images. The policy is turned off and now jenkins is working great.All the images are loading properly and functionality is working fine.