Tile rendering causes edge distortion

[BingCoke]

at dpr = 1 and scale = 180%, many of my PDF files exhibit this issue.

in other scale like 240%

After examining the logic for rendering pdfRect, it appears that the expected rendering position does not align with the actual one. This discrepancy arises because the final width and height are multiplied by the scale factor and then rounded, with the position calculated based on these rounded dimensions. While this rounding has no effect on regular tiles—since our tile sizes are integers—it becomes problematic for edge tiles. Due to the scale factor, the computed size of edge tiles is often a fractional value, causing their positions to shift slightly.

[BingCoke]

btw, the pdf file is these https://raft.github.io/raft.pdf