Presence of attached image prevents other fields to be populated

Using tweet_feed 7.x-3.6+1-dev (2017-Apr-23) on Drupal 7.54. I'm using tweet_feed to import tweets from my own timeline (@s427).

Prerequisite: "Download images that are used in tweets to the local file system" general setting enabled.

Bug: if an imported tweet contains an attached image, the image is indeed saved locally, BUT several other important fields for this tweet are left blank.

This problem doesn't affect tweets that don't have attached images. (All fields are filled correctly in that case.)

Here are the fields that are ignored (left blank):
- tweet contents
- tweet id
- tweet author
- tweet author name
- tweet author id
- source
- link to tweet

Here are the fields that are correctly filled:
- title
- linked images (but only the first image)
- creation date
- hashtags used
- profile image
- retweet count
- user mentions (name, screen name, id)
- mentions in tweet
- tweet feed id

not sure (couldn't test):
- tweet author verified
- favorite count
- geographic coordinates
- geographic place

(Side note: if a tweet contains several images, only the first one is saved; I don't know if this is normal or not.)

Weird thing: I'm using the token + pathauto modules to generate an alias for each imported tweet with the pattern:
twitter/[node:field-tweet-author]/status/[node:field-tweet-id]
Even though those fields (tweet author and tweet id) are NOT filled on the node edition form, the alias is generated correctly.

Disabling the "Download images that are used in tweets to the local file system" setting makes the problem disappear.

Server information:
PHP: 7.0.7
MySql: 5.6
Apache: 2.2.x
System: Linux h2web78 3.16.0-0.bpo.4-amd64 #1 SMP Debian 3.16.39-1+deb8u1~bpo70+1 (2017-02-24) x86_64