No way to enter a cell at the top of a notebook

[rchiodo]

Issue Type: Bug

The toolbar (hover or main) doesn't allow me to enter a cell above other cells.

I have to select the first cell and hit 'a', or use the command palette and pick 'Insert Cell Above'

VS Code version: Code - Insiders 1.59.0-insider (baed439, 2021-07-28T19:37:22.975Z)
OS version: Windows_NT x64 10.0.19043
Restricted Mode: No

System Info

Item	Value
CPUs	Intel(R) Core(TM) i7-6700K CPU @ 4.00GHz (8 x 4008)
GPU Status	2d_canvas: enabled gpu_compositing: enabled multiple_raster_threads: enabled_on oop_rasterization: enabled opengl: enabled_on rasterization: enabled skia_renderer: enabled_on video_decode: enabled vulkan: disabled_off webgl: enabled webgl2: enabled
Load (avg)	undefined
Memory (System)	31.96GB (18.16GB free)
Process Argv	--crash-reporter-id 108b1212-dd8c-4594-8252-c1351bf31268
Screen Reader	no
VM	0%

Extensions (14)

Extension	Author (truncated)	Version
vscode-eslint	dba	2.1.23
prettier-vscode	esb	8.1.0
python	ms-	2021.8.1068685406-dev
vscode-pylance	ms-	2021.7.8-pre.1
jupyter	ms-	2021.8.1081660962
remote-containers	ms-	0.190.0
remote-ssh	ms-	0.65.7
remote-ssh-edit	ms-	0.65.7
remote-wsl	ms-	0.58.2
vscode-remote-extensionpack	ms-	0.21.0
hexeditor	ms-	1.8.2
js-debug-nightly	ms-	2021.7.2717
live-server	ms-	0.2.6
vscode-typescript-next	ms-	4.4.20210729

(1 theme extensions excluded)

A/B Experiments

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[vscode-triage-bot]

Pinging notebook topic followers: Claudia Regio (@claudiaregio) Rich Chiodo (@rchiodo) Jim Griesmer (@greazer) Don Jayamanne (@DonJayamanne) jilljac (@jilljac) Ian Huff (@IanMatthewHuff) tanhakabir Paige Bailey (@dynamicwebpaige)

[rebornix]

With our insert toolbar styling update, we didn't update the insert toolbar above the first cell, which is intended for inserting cells above first cell.

[rebornix]

Fixed in both release and main branch.

[rzhao271]

\closedWith ee1fc3a

[alexr00]

\closedWith ba0df88