I am encountering an issue where the Steam client window is improperly sized on my second monitor. The Steam window's minimum width exceeds the width of the monitor by roughly 30%, and the margins of the store page are excessively wide.

Primary Display: 3840x2160, 300% scaling.
Secondary Display: 1920x1080, 150% scaling.

Window size is normal immediately after changing resolution on second monitor. Issue does not occur if both monitors are set to 4k resolution, only when the resolutions are different. Issue only occurs on second monitor.