Under the colors tab, is the color for Volumes the same as the color for Background? (it shouldn't be)
Under the Charts tab, is Show Trade Levels checked? (it should be)
Post a screenshot with the pending order showing in the terminal but not on the chart.
That may give some clues.
I closed the position but opened a new, random one and the issue is there again. Here is a screenshot
I'd try 2 things:
1. Change the chart background to white; or
2. Open a blank EURUSD chart and check (no indicators or EAs)