Since FME 2025 removed the dedicated canvas toolbar zoom buttons which zoomed a reliable 10%, it’s time to fix the only button which we have now.
The zoom in/out tool current zooms in/out by 10% relative to the current zoom level. It multiples by 90% to zoom in, and multiplies by 110% to zoom out. This should be changed to a x 90% to zoom in and a divide by 90% to zoom out.
Current behaviour → 90%, zoom in goes to 81%, zoom out goes to 89%.
Desired behaviour → 90%, zoom in goes to 81%, zoom out goes to 90%.
If you zoom in and then out again, it should return to the same zoom state.
There are bad zoom levels which cause issues in text rendering, which I’d like to avoid. Multiple zooms in/out will drift the zoom level from the starting point onto a poor number where the text is misshapen or extra bold.