@Shyamal: Did Dereckson agree on working on this, or why did you assign this task to him? If not, please unassign.

Cannot reproduce locally, both commands show a proper वि here. Wondering if either some font issue or some thumbnail backend change issue.

$:acko\> rpm -q ImageMagick
ImageMagick-6.9.3.0-6.fc25.x86_64
$:acko\> rpm -q librsvg2
librsvg2-2.40.16-2.fc25.x86_64
$:acko\> convert -resize 300x300 Code2000_Devanagari_va+i.svg Code2000_Devanagari_va+i.png
$:acko\> rsvg-convert -w 300 -h 300 -o Code2000_Devanagari_va+i.png Code2000_Devanagari_va+i.svg

@Aklapper No, I only added some folks I saw on other rsvg font rendering bugs - I have no idea how this works - in the past I have had bug reports just ignored and then I was told I had to put in the relevant (how can I know who that is?!!) people into the assignee box... Have removed it since you are now aware of this report.

While the specific bug is quite important to fix, I must note that that particular image is intended to show what it showed before Suyash and Shyamal's recent changes--that is, the appearance of the Devanagari on Wikipedia's logo prior to mid-2010--and thus the specific edits that were made to 'correct' it have been reverted.

See its use here: https://en.wikipedia.org/wiki/Wikipedia:Wikipedia_logos

Confirmed as missing fonts on the Thumbor hosts. The same rsvg-convert command renders fine on image scalers.

Change 361871 had a related patch set uploaded (by Gilles; owner: Gilles):
[operations/puppet@production] Include fonts role in Thumbor role

https://gerrit.wikimedia.org/r/361871

Change 361871 merged by Filippo Giunchedi:
[operations/puppet@production] Include fonts role in Thumbor role

https://gerrit.wikimedia.org/r/361871

In T169072#3386836, @Mahir256 wrote:

While the specific bug is quite important to fix, I must note that that particular image is intended to show what it showed before Suyash and Shyamal's recent changes--that is, the appearance of the Devanagari on Wikipedia's logo prior to mid-2010--and thus the specific edits that were made to 'correct' it have been reverted.

See its use here: https://en.wikipedia.org/wiki/Wikipedia:Wikipedia_logos

I agree - I also commented likewise to Suyash who requested me to fix what he saw as a problem - https://commons.wikimedia.org/wiki/User_talk:Shyamal#https:.2F.2Fcommons.wikimedia.org.2Fwiki.2FFile:Code2000_Devanagari_va.252Bi.svg

Should be fixed now. Purging an affected file should fix its current versions' thumbnails.

Purging doesn't seem to affect older versions' thumbnails, not sure how to/if we can fix those.

The purging issue for older versions has been filed here: T169178: Purging files doesn't purge the thumbnails of older versions At this point I don't know if it's easy or hard to fix.

In the meantime, I'll clean up the current version of affected files, which is what really matters.