1739871 - Thunderbird 95.0b1 (64-bit, Win10): Several letters merge with each other

Status: RESOLVED DUPLICATE of bug 1734847

(Thunderbird :: Folder and Message Lists, defect)

Description

[User Dderss]

Attachment: Безымянный.png

User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:95.0) Gecko/20100101 Firefox/95.0

Steps to reproduce:

Just using the client as usual.

Actual results:

Sometimes letters get merged with each other as seen in the attached screenshot. The following did not help:

1. clearing startup cache,
2. re-indexing ("Repair folder"),
3. even deleting the folder altogether (with data and all) and re-adding it.

The mails are fine on the server and, when downloaded from there to a local ".eml" file, are properly displayed if opened by Thunderbird.

Expected results:

A proper rendering of the mail.

Comment 1

[User Dderss]

(The small text between merged letters are the corresponding letter's headers.)

Comment 2

[Wayne Mery (:wsmwk)]

If you mean several emails are merged, this is bug 1734847. This should get fixed in next beta - hopefully Monday.

Comment 3

[User Dderss]

Thanks.

Though not only did I get several emails merged: when I was clicking on such "bad" mail Thunderbird at times apparently was starting to merge basically any and all messages together in the memory as its consumption grew to giant gigabytes and the client was becoming mostly unresponsive.

The situation was so bad that I had to start a completely new profile.

Let's hope that the bug you cited does cover it all since the situation is critical to the very basic functionality of the application. It turns out to be so fragile that I am thinking to turn off updates so new bugs like this (that I thought were already impossible by this time considering the maturity of IMAP protocol processing and Thunderbird's core algorithms) would not destroy my profile again.