createtext exception

[TongXiaoYang]

Version/Branch of Dear ImGui:

Version: lastest
Branch: master

Back-end/Renderer/Compiler/OS

Back-ends: imgui_impl_XXX.cpp + imgui_impl_XXX.cpp (or specify if using a custom engine/back-end)
Compiler: XXX (if the question is related to building or platform specific features)
Operating System: XXX

My Issue/Question:

XXX (please provide as much context as possible)

Screenshots/Video

Standalone, minimal, complete and verifiable example: (see #2261)

// Here's some code anyone can copy and paste to reproduce your issue
ImGui::Begin("Example Bug");
MoreCodeToExplainMyIssue();
ImGui::End();