Created attachment 121128 [details] A second gray menu When call a menu, like click MainMenu, right click in everywhere, it will show a gray menu with nothing, also this affect in hint. Version: 5.1.0.0.beta2 (x64) Build ID: 53054959a12edc6510f51b94ddc9b73d27aedaf6 Threads 8; Ver: Windows 6.1; Render: GL; Locale: zh-CN (zh_CN)
Created attachment 121129 [details] hint
it seems that there's a delay in painting the dropdown menus and tooltips menu background appears first and text appears later I confirm bug under Win8.1 x64 using LibO 5.2.0.0.alpha0+ Build ID: 51a5dfd783bfc1efc52a791aab4114039581252f Threads 4; Ver: Windows 6.2; Render: GL; TinderBox: Win-x86@62-merge-TDF, Branch:MASTER, Time: 2015-12-04_10:49:33 Locale: it-IT (it_IT)
the issue is related to OpenGL if you turn it off from Tools/Options/View it works fine
I've been getting the same bug in Windows 10 w/ 5.1.1.1. Additionally, in Calc cells were sometimes not displaying anything or just dots in stead of text. Turning of force OpenGL in settings as tommy27 indicates worked for me. As text in spreadsheats is often not displaying, this is a major bug. A fix would be not to force OpenGL on Windows (10).
I believe this bug is gone with the recent improvements in the OpenGL rendering. Please re-open if you are still seeing it with the most recent LibreOffice.