2011581 - Regression: Replace All in Compose window does not visually update plain text message body until dialog is closed

Status: RESOLVED FIXED

(Thunderbird :: Mail Window Front End, defect)

Description

[yamato]

User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:147.0) Gecko/20100101 Firefox/147.0

Steps to reproduce:

When using "Find and Replace" in the message compose window, clicking "Replace All" no longer updates the message body visually.
The replacements are applied internally, but the compose window does not refresh until the Find and Replace dialog is closed.

This is a regression compared to earlier Thunderbird versions, where the message body updated immediately after clicking "Replace All".

1. Start Thunderbird.
2. Click "Write" to open a new message compose window.
3. Make sure the message format is set to plain text.
4. Enter some text into the message body.
5. Open the "Find and Replace" dialog.
6. Enter a search string and a replacement string.
7. Click the "Replace All" button.

Actual results:

The plain text message body is not visually updated until the Find and Replace dialog is closed.
The replacements only become visible after closing the dialog.

In earlier Thunderbird versions, the compose window updated immediately when "Replace All" was clicked.
Reproducibility: Always.
This issue also occurs in Troubleshoot Mode (Add-ons disabled).
Plain text only (not HTML).

This behavior negatively impacts usability, as users cannot immediately verify the result of "Replace All" operations.

Expected results:

The plain text message body is visually updated immediately after clicking "Replace All",
allowing the user to confirm the replacement results without closing the dialog.

Comment 1

[Magnus Melin [:mkmelin]]

[seems to crash on daily, probably bug 2010986]

Comment 2

[Hartmut Welpmann [:welpy-cw]]

Attachment: Bug 2011581 - Open 'Find and Replace…" as dependent, not modal dialog. r=#thunderbird-reviewers

This would also resolve bug 419448.

Comment 3

[Pulsebot]

Pushed by [e-mail]:
https://hg.mozilla.org/comm-central/rev/dac7936a6ead
Open 'Find and Replace…" as dependent, not modal dialog. r=mkmelin