Does your feature request involve difficulty completing a task? Please describe.

If we are reading any PDF document with these settings:

• Reflow : off
• Zoom factor (< 1 - e.g. 0.7)
• View mode : continuous

The PDF document is glued on left side of the screen. It feels odd, because we expect to have the text column in the center of the screen.
If we toggle view mode to page, the book is well in the middle.

Describe the solution you'd like
Could we have same margins width left/right with continuous view mode?