392920 - 1/2 second lag between pointing to message info and its preview appearing below - slower than version 1.5

Status: VERIFIED INCOMPLETE

(Thunderbird :: Mail Window Front End, defect)

Description

[e sandel]

User-Agent:       Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8.1.6) Gecko/20070725 Firefox/2.0.0.6
Build Identifier: 2.0.0.6 (20070728)

Last version had virtually instant action clicking a message line and seeing contents in preview window below. This version has noticeable lag. Lag is present for both read and unread messages. It limits the speed of navigating the message list since you must wait for the preview before it will accept selection of a new line.

Reproducible: Always

Steps to Reproduce:
1. pick message line
2. wait for preview to show in window below
3. wait until preview appears before next line can be selected.
4. repeat
Actual Results:  
as described

Expected Results:  
not have this lag - it did not used to.

Comment 1

[WADA:World Anti-bad-Duping Agency]

It sounds that DUP of Bug 347837. 
Read Bug 347837 Comment #2, please. See Bug 384360 also if IMAP.  

Comment 2

[Henrik Skupin [:whimboo][⌚️UTC+1]]

Reporter, does your messages have a lot of remote images inside?

Comment 3

[Wayne Mery (:wsmwk)]

e. s.

does it happens for only html messages?  perhaps a dupe of bug 379828

Comment 4

[Gary Kwong [:gkw] [:nth10sd] (NOT official MoCo now)]

Reporter, does this still occur in the latest supported 2.0.0.x / trunk nightlies?

(Please also answer comment #2 and comment #3.)

Comment 5

[Joshua Cranmer [:jcranmer]]

RESO INCO per lack of response to last question. If you feel this change was made in error, please respond to this bug with your reasons why.