Improve PDF Text Selection Behavior to be More Intuitive (Similar to Edge/Chrome)

[solana_chan]

Currently, when selecting text, you need to hover the cursor directly over the text lines. If you drag the cursor outside the text block, towards the bottom of the page, the selection doesn't work properly. Firefox's built-in PDF reader (PDF.js) processes text differently than Edge. While Edge treats text blocks as a general area and easily selects everything up to the vertical alignment of the cursor, Firefox waits for the cursor to move precisely over the text lines.

This creates a significant loss of productivity, especially for users working with PDF documents. I recommend making the text selection logic more fluid, similar to Chromium-based browsers, and allowing the cursor to move more flexibly over text blocks.

[Jon]

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