Created attachment 145980 [details]
screen shot of bug

SUMMARY
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basically format of the file repeat itself when scrolling down, resulting in things like pdf appearing in empty places blow file where there is nothing.
this is a bug i have see few times in my 3+ year of using linux (manjaro kde), i can't replicate it easily so follow along.
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STEPS TO REPRODUCE

Icon view mod setting : preview icon size : 96
label width : medium
maximum lines : 3

System settings > Fonts > General : Noto Sans 10pt

File name :
John Paul Mueller - C++ All in one for dummies 4th edition-For dummies (2021 January 7)

Steps :
Create new text file > use file name above ( replace: Text File.txt ) > rename file ( only add .pdf ) > copy file enough times to have ability to scroll down

OBSERVED RESULT

word pdf appearing in empty places blow file where there is nothing.

EXPECTED RESULT

word pdf NOT appearing in empty places blow file where there is nothing.

SOFTWARE/OS VERSIONS

Linux/KDE Plasma: manjaro 21.2.2 kde
KDE Plasma Version: 5.23.5
KDE Frameworks Version: 5.90.0
Qt Version: 5.15.2