Verify that the Instant Layout Assistant is Enabled
Open the DevExpress Menu and proceed to the WPF Controls v19.2 sub menu. If it shows the Enable Instant Layout Assistant item, click the item to enable the layout assistant. Otherwise, continue to the next step.
Identify the Error using the Output Window
Open Visual Studio's Output Window to check if it displays exceptions related to the Instant Layout Assistant.
Rebuild the Performance Counters
Corrupted Performance Counters may prevent the Instant Layout Assistant from being displayed. To resolve the issue, rebuild the counters using the following prompt command: