Vertical select broken for characters with mixed widths

Bug reports
,
1

Steps to reproduce

| lkdjlk             | lkdj   | lkdj  |
| ------------------ | ------ | ----- |
| 一二三四           | lkj    | lkj   |
| あいうえお         | lkdjf; | ldkjf |
| 일이삼             |        |       |
| １２３４５６       | lkd    | eij   |
| ｌｋしえあんｖｌｗ |        |       |
  1. Copy the table to Obsidian
  2. Click and hold the scroll wheel or enter visual mode in Vim mode
  3. Select vertically

Did you follow the troubleshooting guide? [Y/N]

Y

Expected result

Screenshot_2026-03-25_16-44-45

Selecting characters that is visually aligned vertically.

Actual result

When selecting vertically, with mouse or in visual mode, Obsidan counts characters between cursor and line start. But since one full-width char is twice as wide as one half-width char, when the content contains both full-width and half-width chars (including half-width spaces), it breaks.

Note: With a proper monospace font that supports CJK characters, CJK characters would be “full-width”, and Latin characters would be “half-width”. If you have such font installed, the table above should be lined up beautifully.

Environment

SYSTEM INFO:
	Obsidian version: 1.12.7
	Installer version: 1.10.3
	Operating system: Windows 11 Pro 10.0.26200
	Login status: not logged in
	Language: zh
	Insider build toggle: off
	Live preview: off
	Base theme: adapt to system
	Community theme: Minimal 8.1.0
	Snippets enabled: 2
	Restricted mode: off
	Plugins installed: 21
	Plugins enabled: 6
		1: Better Word Count v0.10.1
		2: Minimal Theme Settings v8.2.1
		3: Word Splitting for Simplified Chinese in Edit Mode and Vim Mode v1.12.0
		4: Text Finder v0.3.0
		5: Advanced Tables v0.22.1
		6: Relative Line Numbers v3.0.0