zoom with mouse hold click drag shows area to be zoomed outline incorrectly in Mission Planner analyze bin log file window

#### Issue details
zoom with mouse hold click drag shows area to be zoomed outline incorrectly in Mission Planner analyze bin log file window

video screen recording here:
https://youtu.be/-GcEUoZ5ZIY

System details:
I have reproduced this on 2 machines:
Mission Planner 1.3.59 on Win10 Surface Pro (screen resolution 2160x1440, Win10 “scale and layout” at 150% in display preferences
Mission Planner on Win8.1 Pro desktop (Screen resolution 3840x2160, Dell P2715Q monitor w/HDMI cable , Nvidia GeForce GTX 960 video card) Win 8 display “make text and other items smaller and larger” set at one click below largest

#### Version
Mission Planner 1.3.59

#### Platform
[ x ] All
[ ] AntennaTracker
[ ] Copter
[ ] Plane
[ ] Rover
[ ] Sub

#### Airframe type
Fixed wing

#### Hardware type
Omnibus F4 Pro V2 / Chibios

#### Logs
https://drive.google.com/open?id=1OSMxDID3woyCanDjT3ffJnTsk1DiDHs9

Reproduce the issue in Mission Planner's Analyze window using the linked screen recording and log file. Inspect the zoom interaction and verify that the selection outline follows the mouse-dragged area at the reported display scaling settings.

Written by the indexing model from the issue text.