Up and down arrows move around during running build (page jumps a bit too)

[timja]

Reproduction steps

node {
    stage('Checkout') {
        sh "git clone https://github.com/jenkinsci/jenkins"
    }
    
    stage('Build') {
        dir('jenkins') {
          sh "mvn clean install"
        }
    }
}

Watch a running build in the Build stage

Expected Results

Arrows stay in same place, page doesn't move around

Actual Results

pgv-jumping-main.mov

Arrows move up and down
Page can sometimes flash a little bit or jump a bit

Anything else?

No response

Are you interested in contributing a fix?

No response

[timja]

I thought there was an issue filed for this already but I couldn't find it.

[felipecrs]

I thought there was an issue filed for this already but I couldn't find it.

In my mind I thought #737 covered it too, but it is good to have it separated.