Project Browser keeps disappearing, glitchy wall placement

[Anonymous]

Not exactly sure which problem came first, or which is causing which, but I noticed while trying to place curtain walls that there is something odd going on, and that my project browser keeps disappearing. When I select "Wall" in the architecture tab and enter the placement mode, it immediately glitches out of wall placement mode when I click to place the first point. As this is happening, my Project Browser will also disappear. 

[barthbradley]

Is your knee brushing up against a loose cable underneath your keyboard?  

[ennujozlagam]

hello, try to untick use hardware acceleration and update your graphics driver to the latest and see if helps. thanks

[Anonymous]

I'm on a laptop, so no cables.

[cbcarch]

There was a recent Windows 10 update that had affected Revit in several ways--some odd graphics behavior resulted similar to yours.

Make sure you are on the latest build of your Revit version--you did not say which version you have?

Update your graphics driver.