BUG: layout mode text extraction ZeroDivisionError #4274

Job	Run time
Check code style issues	36s
pytest on windows	4m 42s
Build & verify package	14s
pytest on 3.7 (crypto-lib: cryptography)	3m 24s
pytest on 3.8 (crypto-lib: cryptography)	3m 32s
pytest on 3.9 (crypto-lib: cryptography)	3m 45s
pytest on 3.10 (crypto-lib: cryptography)	3m 31s
pytest on 3.11 (crypto-lib: cryptography)	3m 16s
pytest on 3.12 (crypto-lib: cryptography)	4m 42s
pytest on 3.7 (crypto-lib: pycryptodome)	3m 34s
pytest on 3.7 (crypto-lib: none)	3m 34s
Combine & check coverage.	14s
	35m 4s

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