'SSRS Tablix border size inconsistent

I am using a totally standard tablix table (no embedded sub-tables or anything) in a SSRS report with a 1pt solid border around all cells which looks as I would expect during preview with consistent borders.

But when I deploy the report and run it, the borders are inconsistent with a thicker horizontal border line appearing every two or three rows, and the external borders also being inconsistent.

I see the same in Edge and Chrome.

Any ideas? example here



Solution 1:[1]

Try changing the border width to 0.5pt, this worked for me.

Sources

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Source: Stack Overflow

Solution Source
Solution 1 AshleyBaker