I used the UI Adaption Editor to show the Excel export button in my freshly created Fiori Elements List Report . The change is displayed just fine in the Web IDE preview.
After deployment to an on-premise ABAP repository, i made sure the changes file is present. On first application load, the change is displayed. However, after navigating to Launchpad home or another app and re-entering, the change is gone and my list report is displayed without any adaption.
Browser cache and UI2 caches are cleaned. Is this a known issue?
Running on S4 1709 SP 01/2018, SAP_UI 752 SP3