Model View layout bug?

Hi Ben1981 

What you're experiencing with the Power BI Model View layout shifting dramatically toward the bottom-left over time—especially as more tables are added—is a known and increasingly reported issue among users. This behavior isn't due to any setting you've missed; rather, it's generally considered a layout bug or usability flaw within the Model View canvas of Power BI Desktop. As you add tables, Power BI sometimes auto-places them far from the existing layout, often above and to the far left of your current model, forcing you to scroll extensively or drag them manually into view. The “Fit to screen” or “Center diagram” button can temporarily help, but as you've noticed, it doesn't solve the core issue of erratic table placement.

This problem tends to get worse with larger data models and is not something you can permanently fix via settings. While recreating the layout view or organizing objects into separate diagram layers (which Power BI allows via the model view tabs) may help manage complexity, the erratic placement behavior remains. Microsoft hasn’t officially acknowledged a fix for this yet, but it's worth submitting feedback or upvoting similar issues on the Power BI Ideas forum, as this helps prioritize improvements. Until then, careful use of diagram layers and manually maintaining layout discipline is the most practical workaround.