What is the bar above col index?how to hide it?

English
#1

image description
image description1920×1016 68.3 KB

Version: 7.1.1.2 (x64) / LibreOffice Community
Build ID: fe0b08f4af1bacafe4c7ecc87ce55bb426164676
CPU threads: 4; OS: Windows 10.0 Build 19042; UI render: Skia/Raster; VCL: win
Locale: ja-JP (ja_JP); UI: ja-JP
Calc: CL

#2

Press Ctrl+F12 (or choose Data-Group and Outline-Ungroup) until it disappears or just choose Data - Group and Outline - Remove Outline.

#3

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