I haven't seen this being reported anywhere else but since before 1.0 myself and some of my clan members have been having issues with our mods seemingly breaking/disabling in any clan event such as tier 10 advancements. I've included some screenshots of what my mods look like during random battles and in advancements here: https://imgur.com/a/68X9Z . I've also included the WoT logs. It's not shown in the screenshots and I'm not sure if it's relevant but whenever the mods seemingly break the WoT cursor is present ingame overlaying the center of the reticle.
Thank you for your time,