New registered users have group ID that does not exist

[Adrek]

Hi,

lately I have big issue with registration, new members have assigned group ID 95 instead of 0 which is for regular members.
I looked at SA Facebook, SA Google+ and Split forum mod, but didn't find anything that would help me solve it.
I'm writing here, because I hope that someone can point me in right direction where should I look for anything that would cause this behavior.

Here's list of installed mods:
1.   Split Forum Mod   1.26
2.   SA Facebook   3.1
3.   Tapatalk SMF 2.0 Plugin   4.3.2
6.   Moderator and Administrator Comment Tags   1.8.1
7.   Bad Behavior mod   1.5.18
8.   Track User Logins   1.1
11.   SimplePortal   2.3.6
12.   Karma Description Mod   2.7.1
13.   Admin Toolbox   1.0
14.   Smf seo boards title[   1
15.   SEO Sitemap   2.2.1
17.   @mention members   1.1.2
18.   Count unread replies 2.0 RC3   2.0
19.   Default Avatar   2.3
20.   FancyBox 4 SMF   0.5
21.   EU Cookie   1.2
22.   Users Online Today   2.1
23.   Member Color Link   3.1
24.   Add Facebook Like, Tweet, and Google +1   1.0.3a
25.   Location on memberlist SMF2   1.5
27.   Similar Topics   0.6
28.   Nickname to Reply   0.7.1.1
30.   SA GPlus   0.3 REV 9
32.   Facebook Slide Like Box   2.1.3
33.   Ban Filter   1.0
34.   Topic Author   0.1
35.   Misc Anti Spam   1.0
36.   InstagramSz   1.0
37.   Adk Blog   3.0
38.   Avatar On Board RC2   2.1
39.   Recent Topics On Board Index   1.03
40.   Optimus Brave   1.8.7
41.   Arantor CAPTCHA   1.0.8
42.   Best Answer Intergration   1.4
43.   Top 10 Posters and Topic Starters Stats (Today, Week, Month, and Year)   2.6
44.   Aeva Media   1.4w
45.   notCaptcha   1.06
46.   Join date and Location in Posts   1.3.1
47.   Switch Permissions   1.0

Forum version: 2.0.11

[Kindred]

I am betting that tapatalk might be involved...

[Adrek]

removed tapatalk, and still new member has wrong primary ID group :/

[Adrek]

What is interesting - after some time (don't ask how much) it changes itself back to 0. Without any action from my end and it happens to every new member. Magic..

For now I added updateMemberData($row['id_member'], array('id_group' => 0)); in activate function but it's not great solution, because (I guess) after changing email some staff members will have non-staff group ID, but it's way less annoying issue.

Still, if anyone has some ideas what can cause this behavior, please share them here