ctrl+f and dragging the string duplicates it

[Dangerous-Mind]

Issue Type: Bug

Select a string then do ctrl+F.
Drag and drop the string.
It duplicates the string instead of moving it.

If you do F3 and drag/drop other strings they will also duplicate.
The "Spell" is broken if you click on the screen.

VS Code version: Code 1.43.0 (78a4c91, 2020-03-09T19:47:57.235Z)
OS version: Windows_NT x64 10.0.18363

System Info

Item	Value
CPUs	AMD Ryzen 5 3600 6-Core Processor (12 x 3600)
GPU Status	2d_canvas: enabled flash_3d: enabled flash_stage3d: enabled flash_stage3d_baseline: enabled gpu_compositing: enabled multiple_raster_threads: enabled_on oop_rasterization: disabled_off protected_video_decode: unavailable_off rasterization: enabled skia_renderer: disabled_off_ok video_decode: enabled viz_display_compositor: enabled_on viz_hit_test_surface_layer: disabled_off_ok webgl: enabled webgl2: enabled
Load (avg)	undefined
Memory (System)	15.95GB (7.84GB free)
Process Argv
Screen Reader	no
VM	0%

Extensions (9)

Extension	Author (truncated)	Version
xml	Dot	2.5.0
spfx-snippets	eli	1.9.0
vscode-spfx-task-runner	eli	1.2.4
vscode-firefox-debug	fir	2.7.1
cpptools	ms-	0.26.3
powershell	ms-	2020.3.0
debugger-for-chrome	msj	4.12.6
vscode-spfx-deploy-package	Ren	1.1.0
vscode-scss-formatter	sib	1.4.3

[arjundevane]

Pressing Ctrl+F (windows) is not triggering onKeyUp(e) method. However onKeyDown(e) is triggered and that causes the drag-n-drop to consider the modifier button has been pressed.

Trying to see why search box or other command/ctrl shortcuts are breaking event propagation.