A very minor issue, but possibly worth noting in case it links to others? Something I’ve noticed since switching to 2.9.0.5:
As soon as I use a quote-mark or apostrophe in a document, the blinking cursor becomes distorted, taking on a form somewhat like this: ↾. It remains this way all through any paragraph that has quote-marks or apostrophes anywhere in it (this applies to all documents within the project, switching back and forth, etc), but reverts back to the normal blinking cursor in any paragraph without. This is visible in both the text editor and composition mode.
The distortion seems to be directly related to the use of smart quotes, as it doesn’t occur when this option is unchecked.
For now the only workaround I can offer is switching off the auto-correction options that will trigger this in a paragraph, although that will not affect existing paragraphs, only new ones going forward.