From WineHQ Wiki
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Top level page for the most duplicated bugs in Bugzilla, and the most frequently reported bugs on wine-devel, wine-users, the user forum, IRC, and the AppDB.
Current known issues
Not bugs in Wine (but may still cause problems)
|Bug 7991||Rendering is garbled when a program needs to use the maximum number of shader constants of a graphic card|
|Bug 10841||Restore display resolution when focus is lost or on exit|
|Bug 18118||Multiple DOS apps/games fail to start in DOSBox when started from Wine (need DOSBox > 0.74)|
|Bug 31882||Many multithreaded gui apps randomly deadlock in winex11 driver surface section|
|Bug 32479||Multiple applications crash or fail to establish secure server connections (Wine package built with 32-bit GnuTLS 2.6 while host provides 2.8)|
|Bug 34166||Fullscreen flickering on Mac|
|Bug 37347||Black screen or distorted graphics with Intel drivers (Mesa bug 84651)|
|Bug 41637||Delphi: Wineserver stuck / not responding since linux-4.8.3 (kernel bug fixed in 4.9.7)|
|Bug 41639||Wine with freetype 2.7 causes font rendering issues|