# A strange bug about blueprint interface **URL:** \ **Category:** UI\ **Tags:** interface, unreal-engine, bug-report, question\ **Created:** [August 8, 2017, 2:50am UTC](https://forums.unrealengine.com/t/a-strange-bug-about-blueprint-interface/398402 "2017-08-08T02:50:55Z")\ **Posts on this page:** 1\ **Showing post:** 6
**Author:** ![anonymous\_user\_98092ca1](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@anonymous\_user\_98092ca1](https://forums.unrealengine.com/u/anonymous_user_98092ca1)\ **Post date:** [October 24, 2017, 7:26pm UTC](https://forums.unrealengine.com/t/a-strange-bug-about-blueprint-interface/398402/6 "2017-10-24T19:26:02Z")
Related issue is UE-31622, but I experienced this problem with interface methods without struct parameters. > **[The Unreal Engine Issues and Bug Tracker](https://issues.unrealengine.com/issue/UE-31622)** > > Welcome to the Unreal Engine Issue and Bug Tracker. You can check the status of an issue and search for existing bugs. See latest bug fixes too. In our case we failed to manage to make interfaces declared in blueprints to work properly. The issues we faced: ImplementsInterface node returned false to class that contained that interface. Every new interface was corrupting classes that implemented it upon editor restart. Workaround was to declare them using C++. > **[A new, community-hosted Unreal Engine Wiki](https://forums.unrealengine.com/t/a-new-community-hosted-unreal-engine-wiki/141494)** > > After over a year in maintenance mode, the official Unreal Engine Wiki is now permanently offline. These resources now live on a new community-run Unreal Engine Community Wiki — https://unrealcommunity.wiki/! You will be able to find content from... --- _[View the full topic](https://forums.unrealengine.com/t/a-strange-bug-about-blueprint-interface/398402)._