* blocking other programs using desktop integration for file dialogs: latency of several minutes, sometimes dialogs never appear.

That's a Chrome/Chromium thing. Often, if I try to open the Nvidia control panel, it will not appear until I close Chrome. I've had something similar happen with rpcs3 (a ps3 emulator) - only with that, it wouldn't start compiling shaders until Chrome was closed. They continued just fine after reopening it.