Problem with the Shield spell in D&D 5e FGU

[DMTCSyd]

I'm not sure if this is the correct place to post this, but I noticed a problem with the Shield spell in the game I ran last night. An NPC wizard cast it on himself and it worked, increasing his AC. However, later in the same round the wizard was struck and failed a Concentration check so the spell ended. The problem is Shield isn't a Concentration spell.

TC

[Bonkon]

Good Day DMTCSyd :)
I just threw a Drow Mage in the CT in FGU and FGC and had it cast Shield the hit it for damage and it did not roll a concentration check. Not sure why yours did? Was there possibly another concentration spell on the NPC and something somehow got muddled/crossed? Could you reapply the shield and see if it did it a second time? :)

[DMTCSyd]

That is very odd. I have gone back and reopened the battlemap and combat tracker and reapplied shield - there is no mention of Concentration in the effect. However, I scrolled back through the chat window to where I initially applied the spell and as can be seen in the attached screenshot, it is listed as Concentration.

35030

[Zacchaeus]

I don't know where you are getting that effect from but it isn't anything that would be created by any NPC added to the CT. As you can see from my screenshot.

[DMTCSyd]

I don't really know what happened. As I mentioned in my earlier reply, when I opened up the combat tracker and reapplied the Shield spell, there was no mention of Concentration. I can only assume it must have been some weird glitch.

[LordEntrails]

Gremlins!