Description:
If I select a table in a document, open in any other text editor, in WordPad for example, and copy it into clipoard, and then paste it into Writer document, only text is inserted, without grid lines; cells are separated with TABs (or something else?) and have different width. I can see this bug in versions 5.2 and later.
At the same time, in earlier versions, for ex., 5.1.6, table insertion is correct. 

Steps to Reproduce:
1. Copy table from text editor (like WordPad or MS Word, for example).
2. Past it int Libre Office Writer
3.

Actual Results:  
See below the sample of the result. In the original text this was a two-row table:

Method	Value	Unit of measure	Func.norm	Normal value	Visualization
Microscopy of cylinders	0.00	p/mcL	0 - 2.7	 0 - 2,7	[*--]


Expected Results:
It should be inserted as a table (2 rows by 6 columns) with grid lines.



Reproducible: Always


User Profile Reset: Yes


OpenGL enabled: Yes

Additional Info:
Версия: 5.3.0.3 (x64)
ID сборки: 7074905676c47b82bbcfbea1aeefc84afe1c50e1
Потоков ЦП: 8; Версия ОС: Windows 6.19; Отрисовка ИП: по умолчанию; Способ разметки: новый; 
Локаль: ru-RU (ru_RU); Calc: group


User-Agent: Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:57.0) Gecko/20100101 Firefox/57.0