Transition popup screen is not showing up correctly in Jira 9.4.x

Issue Summary

This is reproducible on Data Center: (yes)

Steps to Reproduce

Scenario 1 - Windows Server

1. Spin up an AWS instance such as Windows Server
2. Connect to the instance using Microsoft Remote Desktop (VNC)
3. Install Jira 9.4.2 on the instance
4. Open web browsers such as Chrome or Edge.
5. Access Jira.
6. Create a sample Jira software project.
7. Add a new screen and associate the screen with any workflow transition.
8. Go to any issue screen and click on the issue workflow transition that has the new screen associated.

Scenario 2 - Windows Home, Professional or Enterprise edition

• (will be updating later for more information)

Scenario 3

1. Open a board (Kanban or Scrum) and navigate to the Active Sprints
2. Drag the issue card to transition the issue and you will see a correct pop-up screen (sometimes works sometimes not):
   
   
3. Click on the issue card to show the detailed issues view and the pop-up screen is not showing correctly:
   

Expected Results

The pop up workflow issue screen should be the same in Jira 8.x:

Actual Results

The pop up workflow issue screen is smaller compared to Jira 8.x:

Workaround

No workaround

Notes

• Accessing Jira in Windows Server: it occurs with all of the major browsers: Google Chrome, MS Edge, and Firefox.
• Accessing Jira in Unix/Linux server (tested on Ubuntu and Fedora): it DID NOT OCCUR with any of the tested browsers: Firefox, Chromium, Google Chrome, MS Edge for Linux, all were fine