After the start of Picard I find many entries for 'module conflict' in the Debuglog:

D: 15:58:28 Looking for plugins in directory 'C:
Program Files (x86)\\Tools\\Sound\\MusicBrainzPicard
plugins', 17 names found

D: 15:58:28 Loading plugin u'Add Cluster As Release' version 0.6, compatible with API: 1.0

D: 15:58:28 Loading plugin u'Album Artist Website' version 0.3, compatible with API: 0.15, 0.15.1, 0.16, 1.0, 1.1, 1.2, 1.3

D: 15:58:28 Loading plugin 'Classic Disc Numbers' version 0.1, compatible with API: 0.15

D: 15:58:28 Loading plugin u'Generate Cuesheet' version 0.1, compatible with API: 0.15

D: 15:58:28 Loading plugin 'Disc Numbers' version 0.1, compatible with API: 0.15

D: 15:58:28 Loading plugin 'Feat. Artists Removed' version 0.2, compatible with API: 0.15, 0.16

D: 15:58:28 Loading plugin 'Feat. Artists in Titles' version 0.2, compatible with API: 0.15, 0.16

D: 15:58:28 Loading plugin u'Last.fm' version 0.4, compatible with API: 0.15

D: 15:58:28 Loading plugin u'Last.fm.Plus' version 0.14, compatible with API: 0.15

D: 15:58:28 Loading plugin u'No release' version 0.1, compatible with API: 0.15

D: 15:58:28 Loading plugin 'Release Type' version 1.2, compatible with API: 0.15

D: 15:58:28 Loading plugin u'ReplayGain' version 0.1, compatible with API: 0.15, 0.16

D: 15:58:28 Loading plugin u'Sort Multi-Value Tags' version 0.1, compatible with API: 0.15

D: 15:58:28 Loading plugin u'Standardise Performers' version 0.2, compatible with API: 0.15, 0.15.1, 0.16, 1.0, 1.1, 1.2, 1.3

D: 15:58:28 Loading plugin 'Title Case' version 0.1, compatible with API: 0.15

D: 15:58:28 Loading plugin u'Copy Cluster to Clipboard' version 0.1, compatible with API: 0.15

D: 15:58:28 Loading plugin u'View script variables' version 0.5, compatible with API: 1.0

D: 15:58:28 Looking for plugins in directory 'C:\\Users\\PCS\\AppData\\Roaming\\MusicBrainz\\Picard
plugins', 9 names found

D: 15:58:28 Loading plugin u'Abbreviate artist-sort' version 0.2, compatible with API: 1.0

W: 15:58:28 Module 'addrelease' conflict: unregistering previously loaded u'Add Cluster As Release' version 0.6 from 'C:
Program Files (x86)\\Tools\\Sound\\MusicBrainzPicard\\plugins
addrelease.py'

D: 15:58:28 Loading plugin u'Add Cluster As Release' version 0.7, compatible with API: 1.0

W: 15:58:28 Module 'albumartist_website' conflict: unregistering previously loaded u'Album Artist Website' version 0.3 from 'C:
Program Files (x86)\\Tools\\Sound\\MusicBrainzPicard\\plugins
albumartist_website.py'

D: 15:58:28 Loading plugin u'Album Artist Website' version 0.5, compatible with API: 1.4

W: 15:58:28 Module 'cuesheet' conflict: unregistering previously loaded u'Generate Cuesheet' version 0.1 from 'C:
Program Files (x86)\\Tools\\Sound\\MusicBrainzPicard\\plugins
cuesheet.py'

D: 15:58:28 Loading plugin u'Generate Cuesheet' version 0.2, compatible with API: 0.15

W: 15:58:28 Module 'featartist' conflict: unregistering previously loaded 'Feat. Artists Removed' version 0.2 from 'C:
Program Files (x86)\\Tools\\Sound\\MusicBrainzPicard\\plugins
featartist.py'

D: 15:58:28 Loading plugin 'Feat. Artists Removed' version 0.3, compatible with API: 0.15, 0.16

W: 15:58:28 Module 'featartistsintitles' conflict: unregistering previously loaded 'Feat. Artists in Titles' version 0.2 from 'C:
Program Files (x86)\\Tools\\Sound\\MusicBrainzPicard\\plugins
featartistsintitles.py'

D: 15:58:28 Loading plugin 'Feat. Artists in Titles' version 0.3, compatible with API: 0.15, 0.16

D: 15:58:28 Loading plugin 'Keep tags' version 1.1, compatible with API: 0.15, 0.15.1, 0.16, 1.0, 1.1, 1.2, 1.3

W: 15:58:28 Module 'release_type' conflict: unregistering previously loaded 'Release Type' version 1.2 from 'C:
Program Files (x86)\\Tools\\Sound\\MusicBrainzPicard\\plugins
release_type.py'

D: 15:58:28 Loading plugin 'Release Type' version 1.3, compatible with API: 0.15

W: 15:58:28 Module 'sort_multivalue_tags' conflict: unregistering previously loaded u'Sort Multi-Value Tags' version 0.1 from 'C:
Program Files (x86)\\Tools\\Sound\\MusicBrainzPicard\\plugins
sort_multivalue_tags.py'

D: 15:58:28 Loading plugin u'Sort Multi-Value Tags' version 0.2, compatible with API: 0.15

 

I don't know IF and HOW this affects picard. It just looks a little bit strange