1854991 - Cannot easily change with the slider the font size in a text editor

Status: VERIFIED FIXED

(Firefox :: PDF Viewer, defect, P1)

Description

[Calixte Denizet (:calixte)]

STR:

• open a PDF;
• add some text and commit;
• try to change the font size in using the slider.

It's pretty hard to move the slider.
It's a regression from bug 1853478 and especially from:
https://github.com/mozilla/pdf.js/pull/16944

When the font size is changed, the editor has to change its position hence it has to be moved in the DOM which can be a bit slow and then blocks the main thread.
The DOM position doesn't have to be updated right now so we can slightly postpone this operation.

Comment 1

[BMO Github Automation]

Attachment: [mozilla/pdf.js] [Editor] Slightly postpone the move in the DOM in order to not block the UI (bug 1854991) (#17031)

Comment 2

[Marco Castelluccio [:marco]]

Fixed in 119 by the uplift of bug 1855146 (https://hg.mozilla.org/releases/mozilla-beta/rev/f43f15541c5b).

Comment 3

[Hani Yacoub, Desktop QA]

Verified as fixed on Firefox Nightly 120.0a1 (2023-09-28) and on Firefox 119.0b3 from treeherder (https://treeherder.mozilla.org/jobs?repo=mozilla-beta&revision=1a41a118193dc3ad19c04b3da34ba9f08b5f4b2e) on Windows 10/11 x64, Ubuntu 20.04 and on macOS 11.6.