Some text removed from pdf file after apply redaction

[ashifaliclientpoint]

Hello
I am using pymypdf(1.19.6) to search string from a pdf file. And doing redaction. After doing redaction some string removed from output pdf file.
ex.
In DRAFT_Executive.pdf file I have a string [ i:b:o ] just after A Transparent Partnership. at page no 5
After doing redaction its next link string of integrity, and our success is removed. I had attached two files one is with redaction and one is without redaction. You can check the difference and can generate the issue.
Please reproduce this issue and give any solution.
I am also attaching the original file and converted file.
DRAFT_Executive.pdf
highlighted_file.pdf
highlighted_file-without-redaction.pdf

Reproduce step
import re
import fitz
import sys, json
file_path = "DRAFT_Executive.pdf"

pattern = r'[\s*([s|c|d|i|t]):([a-z]):([o|r])\s*]' # Replace with your desired regex pattern
doc = fitz.open(file_path)
resultOutput = []
tagsPerPage = {}
addedTags = set()

for page in doc:
text = page.get_text()
tagsPerPage[page.number]=[]
matches = re.finditer(pattern, text, re.IGNORECASE | re.MULTILINE | re.DOTALL)
if matches:
for match in matches:
start, end = match.span()
coordinates = page.search_for(match.group())
tempDict={}
firstCoordStr = ""
singleTagArr = []
needleStarted=0
for rect in coordinates:
x1, y2, x2, y1 = rect

            height = y2 - y1

            y1 = page.rect.height - y1
            y2 = page.rect.height - y2  


            currCoordsStr = str(y2)+"_"+str(y1)+"_"+str(x2)+"_"+str(x1)+"_"+str(page.number)
            currText = page.get_text("text",clip=rect)
            currTextTrimmed = ''.join(currText.split())  
            tagComplete = re.match(pattern, currTextTrimmed, re.IGNORECASE | re.MULTILINE | re.DOTALL)
            if(tagComplete):
                if currCoordsStr in addedTags:                        
                    pass     
                else:            
                    addedTags.add(currCoordsStr)
                    tagsPerPage[page.number].append({'y2':y2, 'y1':y1, 'tag':match.group(), 'x2':x2, 'x1':x1, 'page':(page.number+1) })
                    resultOutput.append({'y2':y2, 'y1':y1, 'tag':match.group(), 'x2':x2, 'x1':x1, 'page':(page.number+1) })
            else:
                if needleStarted == 0 and currTextTrimmed.find('[')!=-1:
                    needleStarted = 1  
                    tempDict = {}     
                    if "x2" in tempDict and x2 < tempDict["x2"]:
                        x2 = tempDict["x2"]
                    if "x1" in tempDict and x1 > tempDict["x1"]:
                        x1 = tempDict["x1"]  
                    tempDict={'y2':y2, 'y1':y1, 'tag':match.group(), 'x2':x2, 'x1':x1, 'page':(page.number+1) }                                                   
                elif needleStarted == 1 and currTextTrimmed.find(']')!=-1:
                    needleStarted = 0       
                    currCoordsStr = str(tempDict['y2'])+"_"+str(tempDict['y1'])+"_"+str(tempDict['x2'])+"_"+str(tempDict['x1'])+"_"+str(page.number)                        
                    if currCoordsStr in addedTags:     
                        tempDict = {}                   
                        pass     
                    else:            
                        if "x2" in tempDict and x2 < tempDict["x2"]:
                            x2 = tempDict["x2"]
                        if "x1" in tempDict and x1 > tempDict["x1"]:
                            x1 = tempDict["x1"]  
                        tempDict={'y2':y2, 'y1':y1, 'tag':match.group(), 'x2':x2, 'x1':x1, 'page':(page.number+1) }     
                        addedTags.add(currCoordsStr)
                        tagsPerPage[page.number].append(tempDict)
                        resultOutput.append(tempDict)
                        tempDict = {}
                else:
                    if "x2" in tempDict and x2 < tempDict["x2"]:
                        x2 = tempDict["x2"]
                    if "x1" in tempDict and x1 > tempDict["x1"]:
                        x1 = tempDict["x1"]  
                    tempDict={'y2':y2, 'y1':y1, 'tag':match.group(), 'x2':x2, 'x1':x1, 'page':(page.number+1) }             

if tagsPerPage:
for page in doc:
if tagsPerPage[page.number]:
for item in tagsPerPage[page.number]:
currPage= page.number+1
if item['page']==currPage:
y1 = page.rect.height - item['y1']
y2 = page.rect.height - item['y2']

                page.add_redact_annot(fitz.Rect(item['x1'], y2, item['x2'], y1),text_color=(0, 0, 0),cross_out=True)

            page.apply_redactions()

doc.save("highlighted_file.pdf", garbage=3, deflate=True)
doc.close()

Configuration
OS ubuntu
Python 3.8
PyMuPDF 1.19.6