Editor uses font ligatures even when disabled in settings.json

[timo-suoranta-varjo]

Issue Type: Bug

• VSCode 1.49.1 (also 1.49.0), all extensions (except remote) disabled
• settings.json -> "editor.fontLigatures": false
• Create new file
• Type l l (l, space, l)
• Observe font ligature substition even settings.json has disabled ligatures

VS Code version: Code 1.49.1 (58bb7b2, 2020-09-16T23:27:51.792Z)
OS version: Windows_NT x64 10.0.19041

System Info

Item	Value
CPUs	Intel(R) Core(TM) i7-7820X CPU @ 3.60GHz (16 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 opengl: enabled_on protected_video_decode: unavailable_off rasterization: enabled skia_renderer: disabled_off_ok video_decode: enabled vulkan: disabled_off webgl: enabled webgl2: enabled
Load (avg)	undefined
Memory (System)	31.68GB (23.97GB free)
Process Argv	--crash-reporter-id 8ac824d3-1788-481d-961f-e8058cf653e8
Screen Reader	no
VM	0%

Extensions (3)

Extension	Author (truncated)	Version
remote-ssh	ms-	0.55.0
remote-ssh-edit	ms-	0.55.0
remote-wsl	ms-	0.44.5

[vscodebot]

(Experimental duplicate detection)
Thanks for submitting this issue. Please also check if it is already covered by an existing one, like:

• "l·l" Ligature in "Source Code Pro" incorrectly invoked when render whitespace is enabled (#106583)

[timo-suoranta-varjo]

(Experimental duplicate detection)
Thanks for submitting this issue. Please also check if it is already covered by an existing one, like:

• "l·l" Ligature in "Source Code Pro" incorrectly invoked when render whitespace is enabled (#106583)

Confirmed, this is duplicate. The workaround from #106583 (comment) works for me as well.