AlainP, Ron P, thank you for your response!
Originally, the layer with the lighting filter was a part of bigger file (~1,2 Gb). All the sample points are traces that I forgot to clean up. The original file indeed was created with a previous version (1.10.0, I suppouse), but this layer with its filter was added only after an update.
I think the lighting worked fine the day before. I have a snapshot of some previous state which I checked and its version of filter looks good. Tried to reproduce the bug from this point but no result. I have a feeling that something gone wrong at saving process last time, at least I don't know what else I could done earlier that resulted in this.