The details of how "ink" has been implemented varies on the application. Here are a couple of articles about "ink". Maybe one of them will point you to an undiscovered / hidden feature that will help with your problem.
2016 09 05- Drawing 101 across Microsoft Office appshttps://office-watch.com/2016/drawing-101-across-microsoft-office-apps/
Microsoft has been getting serious about drawing features in Office so we thought it was time to look at what’s available and possible across the Office applications.
. * What to do with drawing?
. * Highlighting or marking up a document
. * PowerPoint
. * OneNote
. * Drawing 101
. * Compatibility
. * Highlighting is different from Highlighting
. * Drawing tricks
. * Straight lines
. * Convert to Shapes
. * Ink to Math
. * Ink to Math plus
. * Animation
. * Other Drawing Opportunities
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2019 06 20 - How To Use Ink Editor In Word 365
https://davescomputertips.com/how-to-use-ink-editor-in-word-365/
You can now use your finger or a digital pen when you are working on a touch device. In addition to drawing, writing and highlighting,
Ink Editor will let you use natural gestures like circling to select and crossing out to delete, adding a
new line, etc!
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2020 05 19- Combined Drawing Tools in Word 365 and other Office programshttps://office-watch.com/2020/combined-drawing-tools-in-word-365-and-other-office-programs/
The Drawing Tools in Word 365 is now larger with separate tools like Lasso and Eraser now in a single combined gallery.
There are other changes and new limitations on the Drawing Tools gallery, some of them undocumented.
. * Add Pen is hidden
. * Drawing Tools limitation
. * Faster color and size change
. * Snap to Text for Highlighter
. * Lasso in Drawing Tools
. * Point Eraser
. * Drawing Tools on the Quick Access Toolbar
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2020 05 19- Action Pen, a renamed feature in Word, Excel and PowerPointhttps://office-watch.com/2020/action-pen-a-renamed-feature-in-word-excel-and-powerpoint/
The Ink Editor button in Word 365 has gone, replaced with the ‘Action Pen’ on the Draw tab in Word 365.
The ‘Action Pen’ is now on right-side of the Draw tab | Drawing Tools.
The Word 365 for Windows Draw tab had an Ink Editor button which activated a series of gestures to let you edit a document using a digital ink pen words ink editor gets more gestures microsoft word 24100 - Action Pen, a renamed feature in Word, Excel and PowerPoint
For the moment the Action Pen is simply a new name for the existing ink editor features including Track Changes.
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