Created attachment 63487 [details]
Steps how to reproduce wwith parallel installation of Master "LOdev " 126.96.36.199.alpha0+ - WIN7 Home Premium (64bit) ENGLISH UI [Build ID: 3985521]" (tinderbox: W2008R2@16-minimal_build, pull time 2012-06-24):
Open attached Sample document.
Columns in sheet should be very different (try with 3.5.5 or 188.8.131.52.beta2).
Old column width is lost when you save with Master
*** Bug 51512 has been marked as a duplicate of this bug. ***
I can confirm this. Also, Michael Stahl filed a duplicate (see comment 1) with attachment 63558 [details], so NEW.
Forgot to say, I tested on Windows XP with 184.108.40.206.alpha0+ (Build ID: 3f1355) pull time 2012-06-27 04:02:20.
Also, [NOT REPRODUCIBLE] in 3.6 branch => very new regression after 3.6 branching
With build from tinderbox W2008R2@16-minimal_build, regression appears between pull time 2012-06-17 00:08:48 (3135d6ea62522276682cdf4da75bc769df263021) and pull time 2012-06-22 07:25:25 (06395b802fe1cdc87a1b05dbeb65bb9cce724656)
I'll take a look at it. This is an area I've been working with closely.
Daniel Bankston committed a patch related to this issue.
It has been pushed to "master":
Fix broken ODS column width import fdo#51446