Text boundaries are only visible after opening a document. When working with the document they disappear partially, then totally. Machine: Intel Core i5-4670S with iGPU 4600 linux 64bit deb -- Libreoffice 5.3.0.3 Bug only exists when Hardware Acceleration is activated. Rendering with OpenGL, then everything is fine.
*** This bug has been marked as a duplicate of bug 101798 ***